Fluid Forms now offers personally designed 3D prints of lampshades. The magic is how you perform the design. Incredibly, you don some boxing gloves equipped with embedded sensors. Then via a not-quite-consumer-level hookup, your punches are applied to a virtual cylinder (the would-be lampshade) in real time! After an appropriate set of presumably artistic punches, you've got your design. Press the print button and pay USD$1,500 and you got yourself a lampshade.
Cool, but try explaining that one to your Mom.