I got this spam email advertising a deer motion detector. It basically consisted of two motion sensors that looked like the sensors that come on the bottom of a outdoor light that turns on when there is movement and a control box that had lights on it. The idea behind it was you set these motion sensing boxes around your stand on deer trails and as a deer comes towards your position the lights flash on your control box so you get a warning that they are comming.
The whole system was like $45. But my question to you guys is do you even think this would be useful? It seems like a waste of $45 to me.