Another spool holder for 20cm spools:)
For the spool holder, print 2 spiral_spool_16 and 1 each of spool_stand_in and spool_stand_out. Suggested material PLA or ABS. You would also need 2 608zz bearings, 2 m5 10mm screws, I used the low profile one, thin but wide head. The spool holder is designed to be low profile to nicely fit the optional container. Secure the bearings into the spool_spiral_16, spool_stand_in slides into spool_stand_out and held together with notches and grooves, just enough to hold them together, adjust according to the spool thickness.
For the case, print rubbermaid_lid with TPU, the container is a "Rubbermaid 1840749 16-Cup Modular Dry Food Storage Zylar Container". You would also need a small piece of bowden tube.