Three siblings and one GameCube is a recipe for territorial skirmishes. Many games only support two users. Jeremy Willden bought his three kids a GameCube for Christmas and quickly discovered parental intervention was critical. He initially used a kitchen timer, but soon opted for a more technology-driven solution. He created an electronic Time Turner. The gadget uses a Microchip microcontroller connected to three LEDs and a small speaker. Every 15 minutes, the LEDs change (each labeled with a childís name) to indicate whose turn it is.