One of my favorite free materials (which I learned from David
Robinson--Center for the Arts, Vero Beach, FL) is "computer vinyl" from
sign shops. Even in Vero Beach, admittedly not a big town, there were
enough sign shops to keep me supplied. This is like contact paper,
vinyl, adhesive-baked and on paper. It comes in gorgeous textures and
colors. We use it alot for activities for family days at the Wichita
Art Museum, because it is brightly colored and "dry".