Have a nice Tetris puzzle on your fridge.
Remix with half the size of the bricks, less holes for magnets.
Made holes for magnets of size 5x3mm
Magnets available on e.g. Amazon
Print time is roughly 1 hour per piece depending on your settings
Made them in PLA, since I had a greater choice of color.
Infill 20% (could be less)
The author remixed this model.