Ask Engadget: What's the must-have gear for business travel?

Ok, last week reader Stephen D. wanted to know what the
best Bluetooth headset was, this week reader Taylor R.
wants to know, what's the must-have gear for business travel?

I'm starting a new job where I'll be on the road at least once a month, and I want to ask Engadget for some advice
about are the best gadgets for business travelers. I've got my laptop and iPod, but I really could use some
recommendations for a good portable mouse and a USB keydrive, as well as some suggestions about what other road
warrior gear I need that I'm haven't thought of. I've also been wondering, are any of those WiFi detectors worth
buying? Are they helpful?

Any tips for our new friend?