Former Mythbuster Jamie Hyneman is seeking US$50,000 to build a prototype pair of roller skates to wear in virtual reality.
Hyneman's pitch video points out that when one straps on goggles and gloves to enter virtual reality, your eyes are occupied and you therefore run the risk of bumping into stuff if you try to walk in meatspace while simulating walking in a virtual world.
The electrified footwear will have wheels under the heel and a track under the ball of the foot. The track will move backwards, so that as you step out in VR you experience the sensation of walking without actually going anywhere as the shoes propel you backwards.