This isn't earth shattering but some might find it useful. My daughter Ashlynn, got her drivers license this last September. With the barn filled up with my junk, my wife’s and my vehicles in our attached 2 car garage, Ashlynn needed a place to park her car out of the weather.
I cleaned out one stall of one of our out buildings to allow her to park inside. There is no automatic garage door opener so she would have to open the overhead door the old fashion way.
To make life easier and maybe safer, I removed a light fixture in that stall and installed a motion detection light. When she opens the door the light comes on and after she closes it, the light goes out.
The duration of time the light stays on can be adjusted from just a couple of minutes to 15 minutes or so. She is not parking in there now but that light is kind of handy. I like it. Should someone, with bad intentions decide to break in during the night sometime, they will be surprised when the light comes on. I've even seen alarms that screw into a standard light socket so that might make for a cheap alarm system.
Anyway, I thought someone might benefit from this. It would be handy is a backyard shed and maybe other places.