I was glad to see the myth of polystyrene or Styrofoam being addressed by Shawn, as we have seen some great examples of puppets made with regular old white polystyrene. One such example that comes to mind is by
The Puppet Co. in Maryland, which created a dwarf puppet for their production of Snow White out of polystyrene foam, which you can see featured on our gallery here:
http://hotwirefoamfactory.com/customer/gallery/prop_thepuppetco.htm

Obviously, we'd encourage you to find the right foam for your puppet, but not to count out polystyrene foams as options
