This is just another low cost Spool Holder, this design fits standard 56mm spools down to 52mm, it requires 2 x 608ZZ ball bearings. The idea is to have a bunch of spools on a threaded rod.
The ball bearing hole was deliberately made tight so you need to use a pair of plier to pop it in. It comes with a little spacer. I printed mine using PLA 1.75mm, 10% infill and a bit slower speed (50mm/s).

Update 1: Separated objects to different files, plus adding a spacer with gap to make removal easier.

Update 2: Removed the spacers which were too small, replaced with rod covers

Update 3: Redesign the Spool Holder, this one is easier to put the ball bearings in and is more stable.

Update 4: Add a slightly larger version (59mm diameter) for larger spools.