I made this up with the limited knowledge I have on the Warriors series :)

Day 1: Favorite clan
Day 2: Favorite warrior
Day 3: Favorite leader or deputy
Day 4: Favorite apprentice
Day 5: Favorite kit
Day 6: Who's death you liked the most
Day 7: Favorite couple
Day 8: Least favorite villian
Day 9: Favorite medicine cat
Day 10: Favorite food (mouse, vole, rabbit, fish...)
Day 11: Least favorite warrior
Day 12: Least favorite apprentice
Day 13: Least favorite leader or deputy
Day 14: Least favorite kit
Day 15: Who's better: Jayfeather, Lionblaze, or Hollyleaf
Day 16: Cat you'd want to be your mother
Day 17: Cat you'd want to be your brother or sister
Day 18: You're cat name
Day 19: Favorite rank
Day 20: Favorite talent (hunting, talking, fighting...)
Day 21: Favorite cat description (fur color, breed, eye color)
Day 22: Favorite kit name
Day 23: Favorite Tribe
Day 24: Favorite Tribe cat
Day 25: You're own Tribe name
Day 26: Least favorite cat predator (badger, fox, mountain lion...)
Day 27: Choose-Firestar & Sandstorm or Firestar & Spottedleaf
Day 28: Choose-Squirrelflight & Brambleclaw or Squirrelflight & Ashfur
Day 29: Choose-Graystripe & Silverstream or Graystripe & Millie
Day 30: Your favorite Warrior Cat series (regular Warriors, The New Prophecy, Power of Three, or Omen of the Stars)