We have been having so much fun with experiments this summer. Lots of dry ice, baking soda and vinegar, that kinda thing. I saw this melted-crayon-on-canvas project on Pinterest and knew the boys would love it. And oh, did they love it.They each chose the order of the colors on their canvases and lined them up for gluing. (I wanted to let them operate the hot glue gun, but that got out of hand very quickly.) So I glued, then they took turns operating the hair dryer to melt the wax.
And a bonus at the end: we put trace paper underneath the canvas to catch the wax. When we were finished, the boys loved peeling the wax off of the paper--and then realized they could color with their new custom crayons!