About this 3D model
If you want to support my work, so I can buy a proper 3D modelling software, you can buy me a ‘coffee’ here :) https://www.buymeacoffee.com/craycray Tetris fridge magnets with captive magnets, I've used these 3x6mm: https://www.amazon.se/dp/B07D33PG7Y?psc=1&ref=ppx_yo2ov_dt_b_product_details Print a set of each color you want.