Cameras are everywhere these days. I once worked in an office building that had a big red sign at the door that warned all visitors that they would be filmed by up to 38 different audio and video cameras once inside. Sheesh! If today's culture of surveillance bugs you, this wireless camera hunter will help you even the playing field a bit. Picking up wireless camera signals from as far as 500 feet away, the device can display the feeds for you on its 2.5-inch color screen. Not only will it let you see what security cameras see, you can use it to make sure your pervy neighbor didn't hook up a shower cam in your bathroom while housesitting for the weekend. Such piece of mind doesn't run cheap, with the device costing you a cool $500, plus a little more for the AA batteries it needs. — Adam Frucci

Wireless Camera Hunter, via Engadget