This is a minimalistic Master Spool originally designed to fit the Das Filament filament, but probably suited for many other manufacturers.

Most Master Spools are designed to be fully printed, needing a lot of time to print and a lot of material. This version needs some extra parts from the hardware store and with aprox 30m of filament and 5 1/2 hours of total printing time you are good to go.

Link to Onshape document:

https://cad.onshape.com/documents/78e10e37fa29bc13d810e62c/w/800f6be1942210eb4d706512/e/a68c223e7dcbb903ded5f0e9