Kinect can be used to create art but what about music? Yep, that too, with this Kinect piano hack letting players tickle the ivories with no keyboard required.

As well as being able to project a piano onto a desk it can also be used to create enormous keyboards on the floor, not unlike the classic scene from Big. This is another application with interesting potential, though there's relatively little that could be done with it in games, unless players have enormous warehouses to dance around in.