Portable encryption software

TrueCrypt is great, but I’m looking for something to encrypt my USB drive with that doesn’t require administrator privileges to use. Any suggestions, oh great hivemind?

I think anything that does encryption on the whole-drive level is going to need admin privileges. If doing individual files is good enough, then there’s GnuPG.

If you just need to encrypt some text I really like LockNote:
https://www.steganos.com/us/products/home-office/locknote/overview/