OK here’s another cool human-powered vehicle to consider for AGCW next year, or for the camping trip with the families especially – a giant inflatable human hamster ball. Runs about $205 US, but it’s only available in Australia at the moment. This is the least expensive of all the ones I’ve linked to so far. The site has a bunch of other cool water toys, like for example the Sumo Tube. Who’s brave enough to clamber inside that thing.