5. Peephole Reverser
Spygadgets.comFor the amateur spies out there, nothing is quite so infuriating as having some archaic object - like, say a door - stand in the way of your lurking eyes and someone else's personal privacy. If only there was a way for the creepy pervert on the outside of the door to clearly see into the room of the unfortunate person they've been stalking for the last several weeks. And it's the peephole reverser to the rescue. This simple device does just as the name implies, allowing any sicko with a little extra money in their bank account to obtain a clear, discreet view into the private space behind those pesky doors, provided it has a peephole to look through. So rather than crouching in a tree all night with a pair of binoculars hoping someone leaves their curtains open, a tactical stalker can now get an even closer look at their obsession. Most versions of this product are marketed toward law enforcement, but its wide availabilty suggests there are a few too many civilians peering into places nobody wants them to.