Closed design for the tetrominos (body made from four equal cubes) for the Tetris Balance Game made by Layer By Layer (https://www.printables.com/model/335938-balance-tetris).
For a more interesting gameplay you can also print some pieces with different infill percentages to increase their weight.
You can also insert magnets into some of the prints. We did this as a challenge for a collegue at his graduation ceremony and it was a hoot and a half :D
To do this, measure your magnet (we used 20x8x3mm) and add a negative volume in Prusa Slicer (or any Slicer) at the desired location (close to a perimeter for example). Make the negative volume 0.5 to 1mm larger in every direction for easier insertion and use a spot of superglue to fix them in place.
Printing
These should be very easy to print, there is nothing special to note.
The author remixed this model.