3 ECHO ZX
Lexar, $16-$46 au.lexar.com ★★★ One of the most subtle and simple backup solutions, Lexar’s Echo ZX is also one of the smallest. This USB stick is slightly bigger than a thumbnail and sticks out of a computer by 8mm — small enough to keep it connected at all times. The drive, available in 8GB, 16GB and 32GB capacities, can be set to automatically back up certain files on computers running Windows 7, Vista, XP or Mac OS X with its preloaded software. It also encrypts files for safe-keeping. The drive only transfers files at 28MBps, however, and cannot store as much as some of its rivals.