TRENDnet TV-IP762IC

Best for Backyards

This four-inch camera's killer feature is its night-vision mode, which captured clear footage even in complete darkness. Place it beneath a porch overhang or peeking out a window, and it'll see straight across your yard. The big drawback is installation – you'll need to involve your router and a laptop, and we found the process laborious. [$124; trendnet.com]