Bluffing clever: fake security camera

If the video surveillance system is too expensive for you, then you can try a little bluffing: Hammacher Sclemmer offers fake cameras. They look quite plausible, and even the red light is on! Gizmodo writes that for two such cameras pay 60 bucks. The proposed unit is powered by two finger batteries. In principle, nothing prevents you from sticking a webcam connected to a computer inside and recording it yourself.