Somehow we lost one of the pieces to the Tetris board game we just bought. A few minutes of measuring, modeling, and printing, and we were off to the races. We only needed one, but designing all of them was just a few more minutes of work.
The included 3mf and stl files have all the pieces. Select the ones that you want. I printed with PLA at .2mm in speed profile on a Prusa Mk4. Took 6 minutes. Left everything at the default values.
The author marked this model as their own original creation.