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.
How to make a hollow book. A hollow book can be a nifty way to hide something, whether it's a spare key, a secret note, or even money. Most people wouldn't think to browse your library for private or personal things.
Learn how to hide money while traveling -- check out money belts and socks with secret pockets that hide travel money, sew your own theft-proof pockets in pants or (yes) underwear for hiding travel money and get a few travel money tips, too.