A remix of two designs to upcycle some empty AMZ3D filament spools. Please review the sizes of the components before printing! I rescaled on the fly in Cura and didn't note the changes so you may need to resize by a few percent one way or other.

The drawers (printed in PLA) were unmodified and available from the original from Keepars:
https://www.thingiverse.com/thing:2812086

I combined the stacker unit from Keepars' empty spool storage bin with the handle from MakerBeck's Bumblebee Spool System and printed in PETG:
https://www.thingiverse.com/thing:2624537

I also adapted the stacker for a base unit and to fit a m6 threaded bar.

The drawers are held in with a m5 threaded bar. I designed a basic drill guide and a washer otherwise the nuts would sit against an uneven surface. I added a hook to the washers to allow an elastic band to hold the drawers shut when in transit. You need 4 printed as designed and four mirrored (I used my slicer program) to complete.

I used dome nuts for aesthetic reasons and to be feet for the unit.