Magickal Graphics: Free Graphics For Your Social Networking site such as Myspace, Orkut, Hi5 and Tagged
I find and make my own too, but usually it's stuff I find on google, then play with to make it the way I want.
I'm too lazy to play with it. I just find what I want and voila! Or if I'm being really lazy, tap somebody else to find a sweet avi. It works too.