If you go to any of the hobby stores Michaels, Hobby Lobby etc. look for the foam doorknob hangers. They buse them for kid's rooms so they come in several colors, but I prefer black for most of my wigglebugs. This foam is exacly the right thinkness and is nice and firm. You can usually get packs of 10 of these doorknob hangers for a few bucks, enough to make several hundred wigglebugs.

Jim Smith