It's day 1 of ETI and I'm already seeing a few repeat categories, I'm guessing there's only like 20, which is silly considering there's 24 contests a day!
I've made an incomplete list of new categories ideas I'd like to see added (: (if some of these themes are already in I just haven't seen them yet at the time of this being posted, my bad!)

-Woodland/Forest
-Warrior/Battler
-Huntress
-Maneater
-Snowday
-Crystals/Gems
-Ocean
-Shamans
-Animal Care
-Cub care/childcare
-Rabbits
-Ghosts/Spirits
-Witch/Spellcasting
-Egypt
-Lava/Volcano
-Desert
-Apocalpytic
-Sleepy
-Aliens/Outer Space
-Cryptids
-(Other) Big Cats
-Storm/Weather
-Mysterious
-Love/Passion
-Sorrow
-Insects
-Wild West
-Games/Tournaments
-Celebrities
-Royalty
-Monochrome
-Birds
-Goth/Emo
-Sparkly/Shiny
-Warm colors
-Cool colors
-Prehistoric

Feel free to add your own!