When I was still living at home, my dad was asking my sister and I about beer that was missing from a refrigerator that he kept in the garage. I didn't take it. As it turns out, my sister didn't take it either (although everyone suspected she did). I was surprised that he noticed a few beers going missing, but he doesn't drink that much and I guess you notice after time when things look out of place.
So, he bought a motion-activated camera with infared night vision. It activated a VCR when it detected motion and recorded everything.
One morning, I woke up to "I got them! Yeah! I got those jerks on camera!". We all went downstairs to find that these little berkeleyers came by one night and stole EVERYTHING from the refrigerator (a case of Corona, MGD, and some other beers). We went to the camera and saw the whole thing. I cannot believe that we didn't wake up. These little shiny happy people bumped into stuff, dropped the beer bottles noisely into MY LAUNDRY BASKET and took off making all the noise in the world.
It turns out, they were my sister's friends. They knew about the refrigerator and they liked to raid it from time to time for their own kicks. My dad invited their parents over to watch the video (with their kids of course). "Oh, we don't believe for a second that little Jimmy would do--Jimmy, is that you?"
They never did replace my laundry basket. But they did reimburse my parents.