This is something we did at LearnOBots (where I work) for fun.
I used the output signal of Makey Makey to generate a signal whenever anyone completes the circuit by holding the metallic door handle and placing the hand on the aluminum foil cut out in the shape of a hand to light up the LED strip.
Pretty simple, right?
L298 Motor Controller Board
Evaluation, Demonstration Kits, Boards and Modules / Evaluation Kits, Boards and Modules