I'm sure you know what I refer to when I say the Star Wars Force Trainer if not then.... http://www.amazon.com/Star-Wars-Science-Force-Trainer/dp/B001UZHASY
I challenge you to use this product or something similar or if you are feeling brave maybe even recreate the technology and possibly improve on it (I hear it's a somewhat flawed product and many reviews on Amazon seem to confirm this but I digress) You should make it do something actually useful like turning on your TV or opening a door. I would like to see more than just a ball float.