LASER TRIP WIRE

of course this isn't my idea, I just wanted to see if I could build one out of spare parts.

and i did

It looks a little rough, but it works. When the laser is blocked it instantly turns on power to the outlet plugs on the side. The power stays on until the "system" switch on the back is turned off or the device is unplugged. I'm still working on a way to reset it easier, right now you have to open a little door on top and reach in with a finger and release a spring arm thing, which isn't hard, but it could be better.