Blogger Crabfu really likes Theo Jansen's enormous kinetic sculptures and toyed around with small models of it powered by different energy sources. It occurred to him that with the right gearing, a hamster exercise sphere could provide locomotion for it. And he was right!
Princess is a tiny little thing, much smaller than what I had imagined and prepared for. I was afriad that her weight wouldn't be enough to get the ball going. But luckily it all worked out great, and test pilot Princess had no problems getting the strandbeest up to speed.
Link via Make