31 Days of Smut (or rather, 31 Days of Porn) is a story/fanfic prompt that I found whilst browsing tumblr.
Day 1 - Pretending
Day 2 - Milking/Lactation
Day 3 - Unusual Sex Toys
Day 4 - Food
Day 5 - Pet Play
Day 6 - Misunderstanding
Day 7 - Uniform or Clothing
Day 8 - Bodily Fluids
Day 9 - Hot or Cold
Day 10 - Spanking
Day 11 - Looking After
Day 12 - Breeding
Day 13 - Somnophilia
Day 14 - Daddy Kink/Incest/Age Play
Day 15 - Piercings or Jewlery
Day 16 - Masturbation
Day 17 - Costumes or Disguises
Day 18 - Exhibitionism
Day 19 - Past or Future
Day 20 - Frottage
Day 21 - Epistolary / Sexting
Day 22 - Body Worship
Day 23 - Priest or Religion
Day 24 - Coitus Interruption
Day 25 - Five Senses
Day 26 - Voyeurism
Day 27 - Lingerie, Heels or Dresses
Day 28 - Worst And Best
Day 29 - Begging
Day 30 - Accidental Stimulation
Day 31 - Laughing
I plan to write all of these, in this order. I will try to upload them every day (as it's called 31 days of smut/porn) but I may not be able to keep with schedule. These will all be SasuSaku stories.