As far as batteries, I have a generator!!!!
Actually, once, I DID set a trap. My room has soft white carpeting. If you run the HOOVER nicely, it leaves the most perfect lines. i vacuumed myself out of the room. Later, I saw footprints.....revealing that someone indeed was in there. Everyone looks in closets and medicine cabinets. Why do you think there's a safe in one of the closets (combination is a riddle).