This is a haunted house run by an Arduino with an Ethernet shield! It can all be controlled wirelessly from a computer or tablet with a web browser. The lights go out, spiders crawl down, wind blows past the curtains, a scarecrow's face lights up, mysterious fog comes out from under the bridge, and a strobe flashes. Almost every part is from RadioShack. It uses a servo, DC motors, relay, PC fan, arduino with ethernet, LEDs, power transistors, and lots of wire.