PUBLIC MARKS from decembre with tags chat & howto

build a motion-sensing security-camera booby trap that scares the crap out of your cat whenever she jumps up there. Most of us would settle with the former option, but an inventive fellow named Brian decided that option two was the way he'd rather go, and the result is the Blender Defender. When triggered, Blender Defender switches on a blender, flashes a strobe, and terrifies cats.