USB Lock – use a USB drive to lock your computer (there's a ton of programs like this that I've been wanting to test for a long time)
USB drive Letter manager – to give a little more control over you portable programs, great if your system doesn't use relative links. For example, the "G:\" drive rather than whatever drive a program is running on.
ImageUSB – write USB images to multiple drives, great if you're giving out a lot of small, cheap drives as part of a promo
See Part 1