Alright, if you know who Mad-Eye Moody is, then you know what I'm talking about when I'm talking about his electric blue eye that darts everywhere.
If you don't, then I'll explain briefly: Alastor 'Mad-Eye' Moody is a character from the Harry Potter series and plays a large role in Harry Potter and the Goblet of Fire. He's an ex-Auror (Dark Wizard catcher) and is all scarred up and stuff. He has an eye that darts around and stuff.
I already made the eye part - I painted a ping-pong ball. I'm just not sure how to make it move. I was thinking of something like having a plastic sphere and filling it with water, but I couldn't find one, sadly.
Any suggestions?
Actually, i was about to suggest using
GOOGLY EYES, the kind used for stuff toy dolls.

They're available at CAROLINAS Fabric shops. For full listing of stores go to the
Cosplay SOS Directory.
Mhm, good idea. I think I'll do that - I always make my costumes too complicated for myself. xD