Two types of a rolling case, one uses a magnetic latch with 3mm* or 4mm* cylinder magnets. The other uses a plastic latch. I usually prefer to print these without a top layer so the infill is exposed on the top / inside, but it doesn't have to be printed that way.
Designs are customizable in Onshape if you need a particular size (magnetic version) (latched version). Different versions are mostly stored in branches.
Filaments: Cherry Red PLA, Transparent Emerald Green and Transparent Aqua PETG from Atomic Filament, Translucent Yellow PETG from Inland*, Transparent Green TPU from Sainsmart*
*affiliate link
34x50mm_Magnetic_Roll_Case_TPU_3mm_magnets.stl.stl | 1.5MB | |
79x82mm_Magnetic_Roll_Case_PETG_+_4mm_magnets.stl.stl | 1.5MB | |
7AA_Roll_Case_-_Extra_Thick.stl | 515.6KB | |
7_AAA_Roll_Case.stl | 509.8KB |