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.
Make Your Own Hide-A-Key Glue a rock to the top of a empty pill bottle, bury the bottle so that only the rock shows. A spare key is hidden inside! - 15 Secret Hiding Places That Will Fool Even the Smartest Burglar OR it could be a Geocache!