Alarmed door stop
I actually have these, more because of a sundowning elderly mother than fear of burglars, but they are VERY effective. The door opens slightly and the sound is louder than that of our house alarm. The one time I was exhausted and slept through it starting to sound, the dog took to howling and made sure that I was up. If a burglar had crashed into it, I'm sure it would have taken them by surprise.
Moron Lave (send a Congressman through the car wash)