Arcade Lightswitch: 2010 - ThinkGeek
This is a product that modifies your household lightswitch to look like a miniaturized arcade cabinet, where the joystick operates the lights and the buttons just activate sound effects. We actually got a provisional patent for the mechanism that mechanically flips the existing lightswitch. It's nothing super complicated, but it's novel enough to be worth it.

Power-Up Arcade Light Switch Plate $19.99