Save money by making your own colorful homemade puffy paint! 1 cup of flour 3 teaspoons of baking soda 1 teaspoon of salt about cup of water food coloring (I used gel food coloring, but you can use liquid food coloring, too)
Elmer's Glue on Canvas, then paint the whole thing. I have totally done this, but with a hot glue gun. Elmer's Glue seems to be a better idea since hot glue leaves behind strings and is harder to work with.