Oh, I scavenge shamelessly. I think there's maybe one or two in there that I made myself, but my visual skills SUCK. I can't even figure out the basics of PhotoShop on my own (like, I can't even remove a background or cut/paste one character onto another background), which makes me really, really sad.

If you check out my icon list from my profile, you'll find credits there for each icon. :)