Ok! thats it! I beat the system. I have enough screws and LEDs to sort forever - no more throwing empty spools. Now I only need to print the drawers as fast as it runs out... kind of a paradox :)
pay attention to the measurements of the spools Im using- you can modify it as you will:
Inner circle : 90mm.
Hight : 56.5mm
Also you'll have to drill holes in the spool and use a long screw or pole through all the filaments.
hope it'll fit!