You could use a simple switch from Radio Shack. All you need to do is cut one of the wires (it doesn't matter which one) that goes to the LEDs and solder the wires to the switch. Unfortunately, I know of no mini switches with screw terminals so you would have to buy/borrow a soldering iron also.What is a cheap and easy method of adding a switch to control my prop's LED eyes? (Pulling out the AA batteries seems doesn't seem like the best method of turning the eyes off.)