This video compares two LEGO safes — one made 10 percent with LEGO and another 99 percent LEGO. The tutorial explains the design difference, locking mechanisms, and structural strength of each build.

There’s an unending list of things you can build with Lego, but that doesn’t always mean that you should. Case in point: a safe. As clever as this set of Lego bookends is, with a secret mechanism for ...