Having made a number of Crashdebugs Ikea Dryboxes (https://www.thingiverse.com/thing:4682691) but unhappy with the filament spool holders, I have over-engineered my own.
It features a precise fit including a notch to fit the cutout present in the Prusament Spools.
It incorporates 608 bearings for smooth running.
Print at 0.2mm layers, 0.4mm nozzle in your choice of filament.
The author marked this model as their own original creation.