The thumb-drive-size Ultra is designed to be your constant fitness companion. Clip it on and it counts the steps you take, tracks the hours you sleep and uploads a bevy of stats to Fitbit.com for your perusal. $99.95
Since your phone can hold your entire music library, here's an easy way to turn it into a mini boom box. This tiny wireless speaker works with Bluetooth-equipped devices and doubles as a speakerphone. $199.99
In the Bluetooth era, this wired headset may look a tad retro. It's one less thing to recharge, though. And...