Cupcake Suggestions Please!

In case you didn't know, I'm a 4-H leader for an anime/manga club. (4-H is a youth development program.)

Our club decided to host their very own convention called CloverCon (the 4-H logo is a 4-leaf clover) as a fundraiser.

Oh, yes... My point...

I'm going to make anime-themed cupcakes to sell at the event. I want to keep them simple, since this is, after all, a fundraiser. I'm going to be symbols from popular anime and video games on each.

So far, I'm making Poke-balls, crescent moons (covering most Shoujo lol), the Triforce from Zelda, the Ouroboros tattoo from Full Metal Alchemist, the Naruto ninja logo thingy that I don't know the name of, 1-up mushrooms and stars from Super Mario, Mokona, and Hello Kitty.

Can anyone come up with other simple characters or symbols that I could use? I'm trying to stick with main stream themes that the average anime fan would recognize.

CloverCon is only a few weeks away, so I need to get started!