A puzzle box is a container that can only be opened using some obscure and often unexpected form of manipulation. It can be as simple as pressing a hidden button on the side of the box or as complicated as turning the box in space so many times. Variations can be found all over the world — Costa Rica, Vietnam, Poland, and Turkey, to name a few countries — though Japanese puzzle boxes seem to be the most common. I like to give them as gifts because I’m mean like that.
The examples above all came from Amazon and can be had with a click. For the gift giver, puzzle boxes are a little bit of harmless sadism. For the gift recipient, they’re as fun as they can be frustrating, especially when there’s something like a gift card, a spot of cash, or a piece of jewelry hidden inside.