A simple puzzle cube where you put the shapes in each side of the cube. These types of puzzles are called dissection or transformation puzzles. The most well known being the Tangram puzzle.

I grew up with a puzzle exactly like this at my grandparents and loved to play with it whenever I visited them. It is simple enough not to be frustrating, but hard enough to challenge you a bit. Even as an adult it is one of the first things I grab whenever I go see them. It was a bit of a challenge to model up, but very rewarding. I hope others find it just as fun as I did growing up!

Print the model with the square on top and use tree supports for the other shapes. No supports needed for the bottom side. Just glue in the in insert with your favorite CA glue.