I think my son's physical therapist has that. Just something to consider, many of these type of products are utilized as therapy aids for kids with developmental delays.
Of course, if they can cross-market them to idiotic parents, all the better for them!
Just as a parent in general, I will also throw out that sometimes things like that help make long snowy winters bearable. Our unfinished basement is full of scooters, mini trampolines, etc, to help get the wiggles out in the winter. When the kids are acting like little hellions I send them for a jumping time out sometimes. Works wonders.