Print Silhouettes, take the image and cut it out of contact paper, stick it on a canvas, hot glue the crayons to the top and melt the crayons all the way to the bottom. Then peel off the contact paper and touch up some edges with white paint.
Essentially, you affix crayons to the top of a canvas, and blast them with a hair dryer. Watch as the colors bleed down the canvas, creating a beautiful, colorful mess! I can imagine this being a great project to hang in a child's room. This is very cool!