A small and simple box to build, has a sliding panel on all six sides. Only one panel will move, simply find this, then another panel will move, and so on, like “follow my leader”, until one side can be removed. But halfway through, you discover that more than one panel can be moved. Easy to make and easy to open. It takes only seven moves.

Outside dimensions: 2" length, 2" width, 2" depth

Inside dimensions: 1 1/2" length, 1 1/2" width, 1 1/2" depth