Wall Mount Spool Holder

Used the wall mount spool holder originally designed by 3DConceptArt as the basis for this.
https://www.thingiverse.com/thing:3686371

I modified it to be a single piece with a single arm. Arm uses a standard M8 threaded rod and has recessed capture for the nut. I didn't include spool holders because which ones you want to use are at your discretion.

The 4 additional holes in the arm around the nut capture are for mounting a container. This one amazon fits the spool (eSun and Sunlu tested, can't speak for others) and leaves plenty of excess room. I place desiccants inside the spool and threaded a Bowden fitting into the container.
https://www.amazon.com/gp/product/B07SZ9R8L7/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1