Burglars often get to know the routines of their targets and see a break in that routine as an opportunity to strike. This device is a low-energy way to make it look like someone's home with the television on. The light sensor can be set to automatically switch on when it's dark outside to create a realistic TV-set glow, or you can set the fake TV on a timer to match your regular schedule. (Again, just make sure that a neighbor is picking up your mail and newspapers, as accumulation of deliveries is a big indication you're trying to trick the tricksters.) Equivalent to the look of a 27-inch HD set, this model uses no more energy than a nightlight.
About $30, FakeTV