This fence is known as “The Safest Wall” in Seoul, South Korea. Couples show their love for each other by locking a pair of padlocks to this fence, and throwing the keys over the edge.
This small, personal wooden stash box has been decorated on the inside with a collage of cutouts. This could be used to store any number of small items.
Here’s a pic from Tumblr of a feather stashed under a floorboard. While this is taken for art’s sake, it shows that there are possibilities for secret storage.
