Rubik 2x2x1
A twisty puzzle like Rubik's cube but only 2x2x1 in dimension.
Well, it's not really a puzzle, as it is very trivial. At least it can be a consolation for those who cannot solve the regular Rubik's cube.
Requirements:
- Lego Technic pin (part ID 2780 or 3673)
- Colored label stickers (cut to 18mm)