As anyone else messed around with the FREE PortableApps for Windows?
Thumb drives are pretty cheap these days and I really like Firefox Portable. If you needed to use someone else's computer, you have your own custom browser without leaving any information on that computer.
Applications I keep on mine include:
7- Zip Portable
VLC Media Player Portable
Sumatra PDF Portable
AI RoboForm2Go (not free, but very nice)
With some of the above applications you can open and view a lot of files without having to have anything installed on the host computer.
One of the Firefox extensions I have installed on all browsers is Foxmarks to keep my bookmarks up-to-date between browsers.
It seems like a really nice way to carry information with you and have some of the tools you may need right there as well.