This looks like it could be fun/dangerous. It might be fun to set them up in a big field and let the kids roll wild. Maybe get access to a dead mall and roll away. Kid hamster ball soccer anyone?
Have you ever seen these things in the wild? Do you have pictures? What is the process for getting the kids into and out of the ball? How would you make the ball? Join us in the comments and contribute your photos and video to the MAKE Flickr pool.