Extra 1: portable printer

If you travel a lot, you never know when you might need to commit one of your digital documents to paper.

Sure, you can probably find a Kinko's, or even business center at your hotel, but experienced business traveler knows you're much better off when you're not at someone else's mercy.

Extra 2: USB hub

If you need to connect to several external devices simultaneously, one or two USB ports on your laptop may or may not be sufficient. If not, keep an inexpensive four- port USB hub in your laptop case.

Cell Phones and Planes: A bad mix?

If you have spent anytime flying you are aware that use of cell phones on planes has been taboo. The reason given is that aviation authorities are concerned that cell phone transmissions will somehow interfere with proper operation of airplane. The question has always been though, do cell phones really cause a disruption. "...Many (including pilots) ... question whether a genuine problem exists," CAA says in a cell phone safety study. There have only been a few reported incidents of mobile cell phone radiation, and these were very minor like setting off a smoke detector in a baggage compartment.

Well, now that stance is changing, at least when it comes to British Civil Aviation Authority. Recently CAA changed rules recently to allow wireless communications devices on airplanes.