A simple case for a roll of 25mm wide Gorilla Tape or electrical tape or whatever. Prints in vase mode, so you have to print the two parts separately. Tested with PLA and PETG, either is fine. I set the extrusion width to 0.8mm, works great with a 0.4mm nozzle. For a different size, just resize it in PrusaSlicer. If you do that, make sure the top diameter is 1.6mm bigger than the bottom for a snug fit.
The author marked this model as their own original creation.