Magnetic Tetris Blocks
thingiverse
I modified a remix of https://www.thingiverse.com/thing:3260778 so I could add magnets to the back. I utilized Lee Valley 3/8" x 1/10" disk magnets from https://www.leevalley.com/en-ca/shop/hardware/rare-earth-magnets/magnets/disc/32065-rare-earth-circular-magnets.
Download Model from thingiverse
With this file you will be able to print Magnetic Tetris Blocks with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Magnetic Tetris Blocks.