I checked out a cool book on artsy concoctions you can make with your kids. I forgot all about making crayon cubes with broken crayons! Peel the paper from broken crayons, fill mini muffin tins about 1/2 full with broken crayon pieces, and melt in a 250 d oven for about 5 minutes. Gently swirl the colors together with a toothpick for a rainbow affect. Pop out of muffin tin when hardened. Wala - create!