How to take your office on the road

I frequently have to be out on the road, taking my office with me was always a challenge.
I have always had an interest in the latest uses of various tools to keep in touch with prospects and existing customers, especially when you have a deadline to meet.

The way I take my office on the road with me is with my smartphone, kindle, and an iPad so that I can set up a hotspot on the fly and make a quick post before I forget and lose my thoughts and ideas.

How do you bring your office on the road?