I did a search on the balance boards and found lots of companies making them. One is
at http://www.indoboard.com/, however there are cheaper brands and there is another type. I found out that most skateboard and snowboard shops have these. They advertise that surfers, wakeboarders, snowboarders, ice skaters, skiers, and skateboarders use these for training. One of the companies advertised that the New York Rangers use their boards as part of their training program and have been using them for several years. I hope to have one of my kids using the board while the other is playing or practicing in the rink. I suspect that we will see these boards popping up at rinks in the next year or so. A kid can stand there and watch a practice while he rides the thing. Most rinks don't let the kids skateboard or rollerblade. But who can they hurt if they are pretty much in the same place. I thought about using a plank of wood and a maxwell house coffee can but my wife accused me of being cheap.