The Zip-Linq Sync-N-Charge retractable cable is a convenient, portable alternative to the power-and-sync systems that come with PDAs. The cable is a spooled reel that extends from 4 inches to more than 2 feet. You can use it not only to sync your PDA to your PC via USB but also to recharge your mobile device.

The Zip-Linq does not have a hot-sync button, so you use the PDA's sync program to activate it, and the short cable requires you to keep your PDA close by. For travel, though, it's a cool solution.