Anime Fans! Need ideas for designs based off your fave anime!?

[icedfantasies]

I'm creating a line of round buttons to sell at upcoming anime conventions. As these are covered with individual swarovski crystals, the designs have to be pretty basic, simplistic.

And please don't argue that certain suggestions 'aren't really anime!!!' ... I don't really care if they're based in America or not, or if it's 'anime enough' for anyone. I'm trying to find out what REAL fans want - and that means all of the fans!

Some ideas already floating around:
Kyo's Kitty Face - Fruits Basket
Konoha Leaf Symbol - Naruto
Pokeball - Pokemon
Moogle Face - Final Fantasy

Again, those are just examples of things already suggested.
No answers are stupid answers! Thanks!