Spy cameras can prove quite useful

Spy cameras can come in handy if you suspect your spouse is cheating or you want to keep an eye on your employees while you're away. You can buy a fairly inexpensive spy camera these days that is disguised as some everyday object -- the person(s) you're watching will never suspect they're on camera. You can get a spy camera disguised as a wall clock, a vanity mirror, a cordless phone, an alarm clock/radio or a teddy bear (use it as a nanny cam).

Advances in technology have brought the prices down on these devices considerably. And they're easier than ever to install, thanks to wireless technology. All you have to do is mount the camera in the area you want to keep an eye on, then plug the receiver into a VCR or a DVR and begin recording. Most are battery operated, so you won't even have to run a power cord. For more information on spy cameras.