I designed this case to keep my 26800 cells safe. The screw top does a good job of not accidentally opening and the tabs keep it from rolling off your desk or table.
I printed this in PETg with a 0.4mm nozzle. PLA will work too of course. Tolerances are moderately tight so I recommend calibrating your printer and profile to make sure the threads work smoothly. I have included the .step files so you can make adjustments if needed.
The author hasn't provided the model origin yet.