Two big favorites that we do in preschool involve crayons and heat. For the first, we grate crayon pieces then put them between two sheets of wax paper. Apply a warm iron so that the crayon all melts. Let it cool and frame it with cardstock. Wa La! Stained glass to hang in the window.
For the second put crayon pieces in muffin tins, one color in each hole. Set the muffin tin in an electric skillet with water in it. After a few minutes the crayon will melt. We use this to paint textured pictures. It dries almost immediately and the texture seems to inspire the kids to some really great creations.
Obviosly these both require adult supervision because of the heat, but the kids love them!
