my most recent purchase was a camera clamp, it was a screw mount plate, and it will clamp itself to pretty much anything, doors, windows, table legs, you name it, if the camp will fit round, it, it'll stay on.
I wouldn't try to put say, a Cannon XL1 on it, but the likes of the Sony PDX10 fits perfectly. I also used it with my stills camera, and got an awesome 5 second exposure traveling through a city center at night