Tired of that poor lampshade excuse of a lamp on your bedside table? Try these Cubelights by Nick Foley. They connect via earth magnets and light up each acrylic cube through an LED circuit as the cubes come together. Of course, you can't just make any pattern; it only works when you've created an "N," a checkerboard-type design, or a nice arch.
Pricing and availability have yet to be announced. Of course, if you like them that much you could always pester Nick into making some just for you. Maybe you could get him to sign it, too.