Here is an extensive list of known working prompts to get your creative juices flowing!

abs
adjusting_eyewear
adjusting_hair
aerial_fireworks
afloat
against_tree
against_wall
air_bubble
aircraft
airplane
all_fours
animal
animal_ears
ankle_boots
anklet
antlers
apple
apron
apron_lift
aqua_bikini
aqua_bra
aqua_hair
aqua_nails
aqua_panties
aquarium
arched_back
architecture
areola_slip
areolae
arm_at_side
arm_behind_back
arm_behind_head
arm_garter
arm_support
arm_tattoo
arm_up
arm_warmers
armband
armlet
armor
armpits
arms_at_sides
arms_behind_back
arms_behind_head
arms_up
asian
ass
ass_focus
ass_grab
ass_support
ass_visible_through_thighs
astronaut
asymmetrical_hair
audience
aurora
autumn
autumn_leaves
aviator_sunglasses
back
back_cutout
back_tattoo
backboob
backless_dress
backless_outfit
backlighting
backwards_hat
bag
balcony
bald
ball
ballerina
ballet
ballet_slippers
balloon
bamboo
bamboo_forest
bandaged_arm
bandaged_leg
bandages
bandaid
bangle
bangs
bar_censor
barbell_piercing
barcode
barcode_tattoo
bare_arms
bare_back
bare_legs
bare_shoulders
bare_tree
barefoot
baseball_cap
basketball
bath
bathing
bathroom
bathtub
beach
beach_chair
beach_towel
beach_umbrella
beachball
beard
bed
bed_sheet
bedroom
bee
bell
belly
belt
belt_buckle
bench
bent_over
bespectacled
between_legs
biceps
bicycle
bikini
bikini_armor
bikini_aside
bikini_bottom
bikini_skirt
bikini_tan
bikini_top
bikini_under_clothes
bird
biribiri
bite_mark
biting
black_background
black_bikini
black_blindfold
black_border
black_bra
black_choker
black_dress
black_eyes
black_flower
black_footwear
black_gloves
black_hair
black_legwear
black_nails
black_panties
black_pants
black_pubic_hair
black_rose
black_scrunchie
black_skirt
black_swimsuit
black_umbrella
black-framed_eyewear
blindfold
blinds
blonde_hair
blonde_pubic_hair
blue_background
blue_bikini
blue_bow
blue_bowtie
blue_bra
blue_butterfly
blue_dress
blue_eyes
blue_fire
blue_flower
blue_hair
blue_hairband
blue_nails
blue_panties
blue_ribbon
blue_scrunchie
blue_shirt
blue_shorts
blue_skirt
blue_sky
blue_swimsuit
blue_wings
blunt_bangs
blurry
blurry_background
blurry_foreground
boat
body_freckles
body_writing
bodypaint
bodysuit
bokeh
bomb
bondage
book
bookshelf
boots
border
bottle
bottomless
bouncing_breasts
bound
bound_ankles
bound_arms
bound_legs
bound_wrists
bouquet
bow
bow_bra
bow_panties
bowtie
box
box_tie
bra
bra_strap
bracelet
braid
braided_ponytail
branch
breast_bondage
breast_grab
breast_hold
breast_lift
breast_press
breast_rest
breast_tattoo
breasts
breasts_apart
breasts_outside
breathing_fire
brick
brick_wall
bridal_veil
bride
bridge
broken_chain
brown_background
brown_eyes
brown_footwear
brown_hair
brown_headwear
brown_legwear
bubble
bucket
bug
building
burning
burnt_clothes
buruma
bush
bust_cup
butt_crack
butterfly
butterfly_hair_ornament
butterfly_on_hand
butterfly_print
butterfly_wings
buttons
cactus
camellia
cameltoe
camisole
campfire
candle
candlelight
candlestand
candy
candy_cane
canopy_bed
cape
car
carrying_under_arm
casing_ejection
castle
casual_one-piece_swimsuit
cat
cat_ears
cat_tail
catsuit
ceiling
cellphone
cellphone_picture
chain
chain-link_fence
chair
chalkboard
champagne_flute
checkered
checkered_background
checkered_skirt
cheerleader
cherry
cherry_blossoms
chest_tattoo
chick
chicken
chimney
choker
christmas
christmas_lights
christmas_ornaments
christmas_tree
chromatic_aberration
cigarette
circlet
city
city_lights
cityscape
classroom
cleavage
cliff
clitoris
close-up
closed_eyes
closed_mouth
closed_umbrella
clothes_around_waist
clothes_lift
clothes_pull
clothes_writing
clothing_aside
clothing_cutout
cloud
cloudy_sky
clover
coat
coconut
coin
collar
collarbone
collared_shirt
colored_pubic_hair
combat_boots
competition_swimsuit
completely_nude
condensation_trail
constellation
contrapposto
convenient_leg
cooking
corset
cosplay_photo
couch
covered_navel
covered_nipples
covering
covering_breasts
covering_crotch
cowboy_hat
cowboy_shot
cowgirl_position
crescent_moon
criss-cross_halter
crop_top
crop_top_overhang
cross
cross_earrings
cross_necklace
cross-laced_footwear
crossdressing
crossed_arms
crossed_legs
crotch
crowd
crown_braid
crystal
cuffs
cum
cum_on_breasts
cup
curly_hair
curtain_grab
curtains
curtsey
curvy
cutoffs
cuts
daisy
dandelion
dappled_sunlight
dated
day
deer_ears
denim
denim_jacket
denim_shorts
denim_skirt
depth_of_field
desert
desk
destruction
detached_sleeves
deviantart_username
dirt
dirty
dirty_face
dirty_feet
dock
dog
dog_tags
domino_mask
door
doorway
double_bun
dragonfly
dress
dress_lift
dress_shirt
drill_hair
drinking_glass
duck
dusk
dust
ear_piercing
earclip
earrings
earth_\(planet\)
elbow_gloves
electric_fan
electricity
elf
embers
energy
energy_sword
english_text
erection
evening
exhibitionism
explosion
eyebrow_piercing
eyelashes
eyeliner
eyepatch
eyeshadow
eyewear_on_head
face
facebook_username
facepaint
facial_hair
facial_mark
facial_tattoo
facing_away
facing_viewer
fairy
fairy_wings
fake_animal_ears
fake_antlers
fake_cover
falling_leaves
fangs
feather_boa
feathered_wings
feathers
feet
feet_up
female_pubic_hair
fence
ferris_wheel
field
fiery_hair
fiery_wings
figure
film_grain
fine_fabric_emphasis
finger_to_mouth
fingering
fingerless_gloves
fingernails
fire
fireflies
fireplace
fireworks
firing
fish
fishnet_bodysuit
fishnet_legwear
fishnets
flame
flaming_sword
flaming_weapon
flashing
floating_hair
floor
floral_background
floral_print
flower
flower_field
flower_pot
flying_sweatdrops
focused
folding_fan
foliage
food
food_in_mouth
foot_focus
footprints
forehead
forest
formal
four-leaf_clover
freckles
frilled_bikini
frilled_bra
frilled_swimsuit
frills
from_above
from_behind
from_below
from_side
front-tie_bikini
front-tie_top
fruit
full_body
full_moon
full-body_tattoo
fur
fur_coat
fur_collar
fur_scarf
fur_trim
fur-trimmed_coat
fur-trimmed_headwear
fur-trimmed_jacket
fur-trimmed_legwear
fur-trimmed_sleeves
g-string
galaxy
garden
garter_belt
garter_straps
gift
gift_bag
gift_box
girl_on_top
glasses
globe
gloves
glowing
glowing_butterfly
glowing_weapon
goatee
goggles
gold
grabbing
grabbing_from_behind
grabbing_own_ass
gradient
gradient_background
gradient_hair
gradient_sky
grass
green_background
green_bikini
green_bra
green_eyes
green_hair
green_nails
green_panties
green_shorts
grey_eyes
grin
ground_vehicle
gun
gym
hair_bow
hair_bun
hair_flower
hair_ornament
hair_over_one_eye
hair_over_shoulder
hair_pulled_back
hair_ribbon
hair_scrunchie
hair_tie
hairband
hairclip
halftone
halftone_background
halter_dress
halter_top
halterneck
hammock
hand_between_legs
hand_fan
hand_in_hair
hand_on_ass
hand_on_hip
hand_on_own_ass
hand_on_own_chest
hand_on_own_face
hand_on_own_head
hand_on_own_knee
hand_on_own_thigh
hand_on_thigh
handcuffs
handgun
hands_in_hair
hands_on_hips
hands_on_own_ass
hands_on_own_knees
hanging
hat
hat_flower
hat_removed
head_out_of_frame
head_tilt
headband
headphones
headwear_removed
heart
heart_choker
heart_earrings
heart_tattoo
heart-shaped_eyewear
helmet
helmet_removed
hibiscus
hickey
high_heel_boots
high_heels
high_ponytail
highleg
highleg_panties
highleg_swimsuit
hill
holding
holding_ball
holding_bouquet
holding_cigarette
holding_flower
holding_gun
holding_hands
holding_helmet
holding_panties
holding_phone
holding_umbrella
holding_underwear
holding_weapon
holly
holster
honey
honeycomb_\(pattern\)
honeycomb_background
hoodie
hoop_earrings
horizon
horns
house
huge_ass
huge_breasts
hugging_own_legs
hydrangea
implied_sex
in_box
in_tree
in_water
indian_style
indoors
innertube
instrument
iphone
island
ivy
jacket
jeans
jewelry
jingle_bell
jungle
keyboard_\(computer\)
kimono_lift
knee_boots
knee_up
kneehighs
knees
knees_to_chest
knees_up
lace
lace_bra
lace_panties
lace_trim
lace-trimmed_bra
lace-trimmed_dress
lace-trimmed_legwear
lace-trimmed_panties
lace-up_boots
lake
landscape
lantern
large_areolae
large_breasts
leaf
leaf_background
leaning_back
leaning_forward
leaning_to_the_side
leather
leather_boots
leather_jacket
leg_tattoo
leg_up
legs_together
legs_up
lemon
lemon_slice
lens_flare
leopard_print
leotard
letterboxed
library
lifted_by_self
light_particles
light_rays
light_smile
lighthouse
lightning
lightning_bolt_symbol
lights
lightsaber
lily_\(flower\)
lily_of_the_valley
lily_pad
lingerie
lip_piercing
lips
lipstick
lipstick_mark
log
long_braid
long_fingernails
long_hair
long_skirt
long_sleeves
looking_afar
looking_at_viewer
looking_back
looking_down
looking_over_eyewear
looking_to_the_side
lotus
lounge_chair
low_twintails
low-tied_long_hair
lying
magazine_cover
magic
maid_headdress
makeup
male_focus
male_pubic_hair
mascara
mask
mature_female
medium_breasts
medium_hair
mermaid
merry_christmas
messy_hair
metal_collar
micro_bikini
micro_shorts
microskirt
midriff
military_vehicle
milky_way
miniskirt
mirror
mohawk
mole
mole_above_mouth
mole_on_ass
mole_on_body
mole_on_breast
mole_on_neck
mole_on_stomach
mole_on_thigh
mole_under_eye
mole_under_mouth
molten_rock
moon
moonlight
morning_glory
moss
motion_blur
motor_vehicle
motorcycle
mountain
mountainous_horizon
multi-tied_hair
multicolored_clothes
multicolored_hair
multiple_braids
multiple_piercings
muscular
muscular_female
muscular_male
mustache
muzzle_flash
nail_art
nail_polish
name_tag
nape
nature
navel
navel_piercing
neck_bell
neck_tattoo
necklace
net
newspaper
night
night_sky
nipple_bar
nipple_piercing
nipple_rings
nipples
no_bra
no_panties
no_pants
no_shirt
no_socks
nose
nose_piercing
nude
number_tattoo
o-ring
ocean
off_shoulder
oil-paper_umbrella
old
old_man
on_back
on_bed
on_desk
on_grass
on_ground
on_side
on_stomach
on_vehicle
one_breast_out
one_eye_closed
one_side_up
one-piece_swimsuit
one-piece_thong
onsen
open_book
open_clothes
open_coat
open_door
open_fly
open_jacket
open_mouth
open_shirt
open_window
orange_\(fruit\)
orange_background
orange_bikini
orange_flower
orange_hair
orange_nails
orange_panties
orange_shirt
orange_shorts
orange_skirt
orange_sky
orange_theme
orange-tinted_eyewear
orb
ornament
outdoors
outstretched_arm
outstretched_arms
paint_splatter
palm_leaf
palm_tree
panties
panties_aside
panties_removed
panties_under_pantyhose
pants
panty_pull
pantyhose
pantyshot
paper_lantern
parasol
park
park_bench
parted_lips
partially_submerged
partially_unbuttoned
partially_underwater_shot
partially_visible_anus
partially_visible_vulva
pasties
path
patterned_background
pavement
pearl_necklace
pectorals
pelvic_curtain
pencil
pencil_skirt
pendant
penis
petals
phone
photorealistic
pier
piercing
pillarboxed
pillow
pine_tree
pink_bikini
pink_bow
pink_bra
pink_flower
pink_hair
pink_hairband
pink_legwear
pink_lips
pink_nails
pink_panties
pink_ribbon
pink_rose
pink_scrunchie
pink_shirt
pink_shorts
pink_skirt
pink_swimsuit
pink_umbrella
pistol
plaid
plaid_bikini
plaid_bow
plaid_bra
plaid_dress
plaid_panties
plaid_pants
plaid_shirt
plaid_skirt
planet
plant
pleated_skirt
plump
plunging_neckline
pointy_ears
poke_ball
polka_dot
polka_dot_background
polka_dot_bikini
polka_dot_bow
polka_dot_bra
polka_dot_dress
polka_dot_legwear
polka_dot_panties
polka_dot_skirt
polka_dot_swimsuit
pom_pom_\(cheerleading\)
pond
ponytail
pool
pool_ladder
poolside
portrait
potted_plant
pov
pov_hands
power_lines
presenting
princess_zelda
profile
pubic_hair
pubic_hair_peek
pubic_tattoo
public_nudity
purple_bikini
purple_bow
purple_bra
purple_choker
purple_dress
purple_eyes
purple_flower
purple_hair
purple_nails
purple_panties
purple_ribbon
purple_rose
purple_scrunchie
purple_shorts
purple_skirt
purple_sky
purple_swimsuit
pussy
pussy_juice
pussy_peek
pyrokinesis
racket
railing
rain
rainbow
reaching_out
realistic
reclining
red_bikini
red_bow
red_bra
red_dress
red_eyes
red_flower
red_hair
red_jacket
red_lips
red_moon
red_nails
red_panties
red_rope
red_rose
red_shirt
red_skirt
red_sky
red_swimsuit
red_umbrella
red-framed_eyewear
red-tinted_eyewear
reflection
reindeer
reindeer_antlers
reindeer_costume
restrained
revolver
ribbed_sweater
ribbon
ribbon_bondage
ribbon_braid
ribs
rifle
rimless_eyewear
ring
ringlets
ripples
river
road
rock
rooftop
rope
rose
round_eyewear
rubber_duck
sack
sand
sand_castle
sand_sculpture
sandals
sandwiched
santa_bikini
santa_boots
santa_costume
santa_dress
santa_gloves
santa_hat
scar
scarf
scenery
school
school_desk
school_uniform
scrunchie
seagull
seashell
see-through
self_hug
selfie
semi-rimless_eyewear
sepia
shackles
shade
shadow
shallow_water
shared_umbrella
sheer_legwear
shell
shibari
shibari_over_clothes
shiny
shiny_skin
ship
shirt
shirt_lift
shoelaces
shoes
shooting_star
shore
short_hair
short_shorts
short_sleeves
short_twintails
shorts
shorts_under_skirt
shouji
shoulder_blades
shoulder_tattoo
shower_\(place\)
shower_head
showering
siblings
side_bun
side-by-side
side-tie_bikini
side-tie_panties
sideboob
signature
silver_hair
single_braid
single_horn
sink
sisters
sitting
sitting_on_bed
sitting_on_desk
sitting_on_rock
skindentation
skirt
skirt_basket
skirt_hold
skirt_lift
sky
skyline
skyscraper
sleeveless
sleeveless_dress
sleeveless_shirt
sleeves_folded_up
sleeves_past_wrists
sleeves_rolled_up
sliding_doors
slingshot_swimsuit
small_breasts
smartphone
smile
smoke
smoking
smoking_gun
sneakers
snow
snowflakes
snowing
soaking_feet
soap_bubbles
soccer
soccer_ball
socks
soles
solo
solo_focus
space
space_craft
space_helmet
spaghetti_strap
sparkle
sparkler
sparks
spider
spider_lily
splashing
split
sport
sports_bikini
sports_bra
sportswear
spread_legs
spreader_bar
spring_\(season\)
squatting
squatting_cowgirl_position
stadium
stage_lights
stained_glass
standing
standing_on_liquid
star_\(sky\)
star_\(symbol\)
star_earrings
starfish
starry_background
starry_sky
starry_sky_print
steam
stomach
stomach_tattoo
stone_wall
storefront
storm
straddling
strap_gap
strap_slip
strapless
strapless_bikini
strapless_dress
straw_hat
strawberry
streaked_hair
stream
string_bikini
string_panties
striped
striped_bikini
striped_bra
striped_legwear
striped_panties
striped_shirt
striped_swimsuit
stripper_pole
stud_earrings
submerged
subtitled
suit
summer
sun
sun_hat
sunbeam
sundress
sunflower
sunflower_hair_ornament
sunglasses
sunlight
sunrise
sunset
surfboard
suspension
sweat
sweater
sweater_lift
swept_bangs
swimming
swimsuit
swing
sword
table
tail
tail-tip_fire
taking_picture
tally
tan
tank
tank_top
tankini
tanlines
tape
tattoo
tears
teeth
telescope
tennis_ball
tennis_racket
tennis_uniform
thick_eyebrows
thick_thighs
thigh_gap
thigh_ribbon
thigh_strap
thighhighs
thighs
thong
thong_bikini
tiara
tied_hair
tile_floor
tile_wall
tiles
tinted_eyewear
tiptoes
tire
toe_scrunch
toeless_legwear
toenail_polish
toenails
toes
toilet
toned
tongue
tongue_out
tongue_piercing
topless
torch
torn_clothes
torn_jeans
torn_legwear
torn_pants
towel
town
tree
tree_shade
tree_stump
trembling
tropical_drink
tulip
twilight
twin_braids
twin_drills
twintails
twisted_torso
two-tone_hair
ugly_man
umbrella
unbuttoned
under_tree
under-rim_eyewear
underboob
underbust
undercut
underwater
underwear
underwear_only
updo
upper_body
upskirt
v_arms
vagina
variations
vase
veil
veins
vertical_stripes
vertical-striped_bikini
vertical-striped_panties
very_long_hair
vibrator
vines
volcano
volleyball
volleyball_uniform
wading
wall
watch
water
water_drop
watercraft
waterfall
watering_can
watermelon
waves
wavy_hair
weapon
wedding_band
wedding_dress
wet
wet_clothes
wet_dress
wet_hair
wet_shirt
wheat
white_apron
white_bikini
white_bow
white_bra
white_butterfly
white_choker
white_dress
white_flower
white_footwear
white_hair
white_headband
white_legwear
white_panties
white_pants
white_ribbon
white_rose
white_scrunchie
white_shirt
white_shorts
white_skirt
white_sweater
white_swimsuit
white-framed_eyewear
wind
windmill
window
windowsill
wing_collar
wings
winter
winter_clothes
wisteria
wooden_fence
wooden_floor
wooden_horse
wreath
wrestling_ring
wrinkled_skin
wristband
wristwatch
yellow_bikini
yellow_bow
yellow_bra
yellow_butterfly
yellow_eyes
yellow_flower
yellow_legwear
yellow_leotard
yellow_nails
yellow_panties
yellow_ribbon
yellow_rose
yellow_shorts
yellow_skirt
yellow_sky
yellow_swimsuit
yellow-framed_eyewear
yoga_pants