Microsoft Bluetooth Mobile Keyboard 6000

Whether you want a larger keyboard than your netbook offers or simply want to add a number pad to your mobile setup, the Microsoft Bluetooth Mobile Keyboard 6000 ($90; October 2009) is a good solution. Just slightly thicker than the AAA battery that powers it, the ultra-slim keyboard boasts Microsoft's Comfort Curve design for ergonomic typing, and comes with a matching, stand-alone number pad that can be purchased separately for $45.