Stash Cash in the Door? - 15 Secret Hiding Places That Will Fool Even the Smartest Burglar. you know until you put it all over the Internet and then everyone and their mother knows you have secret hiding places.
Tutorial for Simple Leather Envelope Bag -- or a pencil case or anything -- I didn't use this tutorial to make mine, but I stumbled upon it today. I don't wet my leather but I might give that a try next time to see how that work out.