Plank Box - 3D Wooden Puzzle - Crafty Sunflower (SM5)

This is 12 pieces that perfectly fit together to make a sturdy wooden box.  However, it is not an easy assembly, hence the word "puzzle."

In the case that you can't figure it out on your own, the solution is contained on the back of the storage box (blurred in the photos).

Fully assembled it is about 3"x3"x3" square.

Plank Box – 3D Wooden Puzzle – Original Design  – Display Tray – Expert Difficulty