This nifty bit of do-it-yourself work transforms and hides away your valuables behind a wall-mounted bookshelf.
I love books, and I love the idea of secret hiding places as well. That's probably Enid Blyton's fault. This nifty design uses load-bearing casters placed underneath a bookshelf in front of a doorframe to hide away secret goodies in an easily accessible, but not entirely obvious way. I do like the ingenuity, although I'm not quite so fond of what the particular bookshelf is used to hide, however.