You would need to make a document with all these passwords on. Notepad will do. Then just copy it to your memory stick and guard it with your life!
I wouldn't advise this though as it is highly insecure and anyone who had hold of your stick (oo-errr) could find out all your passwords. Why not just put hints to them or move each letter on by one?
So if your password was dog, you could put "LASSIE" or "EPH"?