If you're in need of a covert spy camera to do something like catch a thieving nanny, a cheating spouse, or a showering neighbor, the more hidden the camera the better your chances of not getting caught, sued, and slapped. It doesn't get much more hidden than this: a video camera hidden in a Philips-head screw. Available in both colored or black-and-white as well as wired and wireless versions, the tiny screw camera can be hidden pretty much anywhere and not be noticed. Simply set it up and then hook it up to a TV for direct viewing or a VCR or computer for recording, and it'll show you everything that's going on while you aren't there. It's way more high tech than photographic binoculars, and you don't need to hide in a tree to use it. Prices range from $100 for a wired black-and-white version to $300 to a color wireless version, available now online. — Adam Frucci