If you have a USB flash drive that you use to transport files easily, you might be interested in one of Microsoft’s latest free downloads, SyncToy 1.0.
This tool in another in Microsoft’s popular PowerToy line of small downloadable utilities for Microsoft Windows. SyncToy makes it easy to synchronize the contents of two folders, such as those on your flash drive and those on your desktop PC.
Now you can make sure that everything you were working on in those synced folders on your desktop will be immediately available on your portable thumb drive.