As you probably already know, it's incredibly hard to get candid shots of those around you when they know the camera is being pointed in their direction — and people seem to have an innate ability to sense this. The Super Secret Spy Lens ($50) solves this problem by using a precision mirror and a cut-out in the side to let you point away from your subject, bringing down their defenses and improving the odds you'll get a terrific photograph. For great, candid holiday photos, it's the perfect addition to your camera bag. Also great for weekend P.I. and espionage work.