You know what might be cool for something like that?
one of those "touch light" things that you wire up in line with a light, and then connect a wire to a metal object somewhere. When you touch the metal, the light comes on. They have em at home depot.
You'd probably want to rig it so that touching it could ONLY power up, and not power off, but other than that, it could be cool.
then, you'd just have to touch something metal around the screen, maybe a screw or something.