35 Uses for Crayons: They’re not just for Coloring! Heat rocks then put crayons on them and they melt instantly. Cool paperweights. Crafts For Kids, Summer Crafts, Activities For Kids, Paper Weights, Melted Crayons, Melty Crayons, Kids Crafts, Rocks Crafts, Crayons Rocks
1st attempt went so so. Waiting to hear back from the creator to see what I did wrong so we can try it again! don't use ceramic plates (mine cracked and wasn't hot enough for the crayons to melt) she said she used 100% melamine plates at 40 sec in the microwave.
Crayon and coloring book travel case featured at the blog "seven thirty three." (Unsure why, but if you click to follow the link, up pops a Pinterest warning about the page being reported for spam. I didn't see anything spammy on the blog, just lots of cute craft and party ideas.)