Each year at this time, I volunteer some time at one of our local grade schools helping to set up their annual Halloween party in the gymnasium. For next year, I'd like to build some sort of a new game for the event, and I've been thinking about something like a large clown face with holes in it into which the kids could try to toss balls (tennis balls maybe?). I can build some sort of wood pathways on the back side of the board to direct the balls back down to a box at the bottom front of the game, but I need to find some sort of simple sensor switches to locate inside each hole that would set off a number of colored lights (maybe in some sort of a circular pattern?) and maybe a siren or other noise-making device when a ball enters any one of the holes. The game would probably have to plug into a std 120-volt outlet, but I'd want the lights and circuitry on the back of the board to be low voltage so that there's no electrical danger to the kids. I could probably use a circuit diagram for such a game as well. Can anyone help me with this sort of a project? I'm open to any sorts of other ideas anyone might have. I wouldn't want it to end up costing a huge amount of money, but I'd be willing to put a little $$ into it to make something nice that the kids would get a kick out of.