DeviantArt? Not sure if you know, but deviantart.com has quite a bit in the way of customizations, wallpaper, icons, etc. Here is the OS icon section they have: http://www.deviantart.com/?loggedin=1#catpath=customization/icons/os&order=9
I've found, and am now using this one: http://stopdreaming.deviantart.com/art/Albook-extended-782-icons-95130402 +rep for the suggestions