Here is my hack-amo version of the filament spools stand for the 'Multiple Mechanism Auto-Rewind Spool Holder' by ea69. It's basically a wall mount design for the stand.
Non-printed parts required are:
Two 3x10mm screws and nuts
When mounting the shaft to the frame, use the small hole at the bottom as a guild to know when the shaft is aligned. Then tighten the two screws and locktite/nail polish them so they won't loosen.
It's very simple and straight forward.
I've uploaded two versions of the shaft, a short and a long version. Since the bottom is now open they should work the same, except one will be quicker to print.