Jumping Leg Braces

Basically a set of jumping stilts, these leg brace things use simple mechanics (including weird metallic springy crescents) to basically give you spring-assisted steps. You need to be pretty dexterous to use them without breaking something or falling on your ass, but they do work if you need some way of propelling yourself around faster than your legs will carry! Also, these add about a foot to your total height, so you might not want to use them indoors.