DIY Kinect TV stand uses $10 worth of materials
It might look, well, insane, consisting of a metal plate (in the example, a "handicap" sign), a bit of PVC pipe, and Velcro, but it appears to fulfill its function of putting a flat surface on the top of your TV. Besides, nobody'd be able to tell you had instituted such an unorthodox solution unless they peeked behind the TV, and then they'd probably just be impressed by the combination of thrift and cleverness it suggests.