If the army can have its own exoskeleton units, then why not kids? That's the idea that Japanese company Sakakibara Kikai is going after with its $21,000 Kid Walker, which is an exoskeleton that will move your kids around and is designed for kids. Your child can sit up in a chair on this 5 1/4-feet tall, 400-pound machine and it will "walk"--well, it actually has wheels that will roll your kids around as the robotic legs don't move for safety.