Re: my bikes stolen :-(
Apart from tripping IR beams on every route to my shed (unless they parachute in), there are a few nasty surprises in case I sleep though the buzzer that the beams activate. Light hearted stuff, like slivers of Stanley blade glued to tools they might try and use to cut the locks, a pair of cutters with the hinge bolt 99% filed through so when they use it the thing collapses and crushes their knuckles, that type of thing.