A TRAVELER'S AID

Kensington.com┬áhas a nice external numerical keypad for laptops that also functions as a stand-alone calculator. That’s handy if you do a lot of key punching. It’s sold in a package with a wireless mouse for $60 at Kensington’s Web site.

An external mouse is really nice to have for a laptop. We use one. If you like the idea of the keypad alone, we found it for around $30 on the Web.

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