Netbooks and great for portability, but the downside is that they never offer a numeric keypad, and since you’re always on the go, you wouldn’t want to carry around one of those USB numeric keypads, right? That’s where the Key Mouse comes into play. This Bluetooth mouse has a hidden number pad underneath its retractable hood, allowing you to key in your latest sales figures at lightning speeds. The looks of the mouse might take a little getting used to, though.