Today is National Crayola Crayon Day, possibly the most fundamental childhood toy. Who can forget the holy grail 64 pack with built-in sharpener, the pristine rainbow of a newly opened box, and that delicious waxy smell? Artist Hoang Tran has created an artform of his own from these colorful icons, carving the crayons into tiny pop culture wax sculptures. Check out more of his work at his blog Wax Nostalgic. And celebrate the day by busting out your old crayons and coloring outside the lines. Or you can dress up your dog.