I'm looking for one of those tiny video cameras that run on a 9-volt battery and send a signal to a nearby receiver. Does anyone know of a small one (about the size of a finger tip) that works in very tight situations? I'd like to be able to get an image from about 2-inches away from the camera. I think i might want a wide-angle macro, but i'm not sure they exist. Links to manufacturers are appreciated. Less expensive is more important to me than high resolution.