Be the Hamster! Human Powered Snow Cones via a totally hands on Hamster wheel. Each individual makes their very own snow cone while running in the wheel. It is a Willy Wonka / Rube Goldberg looking machine, that makes snow cones.
I love making creative hands-on devices to get kids interested in engineering and science. Making the by-product of my creations also taste good, makes them a sure crowd pleaser.