Yeah it's nothing too special aside from using a very small quantity of filament and having three different ways to mount the hanger. You can hang it from the wall with a screw, hang it from its built-in hook, or hang it on a line or wire for stacking up many spools in a row.
Prints without supports and shouldn't need a brim.
2023-12-21-10-43 Added a new version of the model that is improved in various ways, and holds two spools instead of one and has built-in hooks rather than holes for quick attachment to cable or line.
2023-12-25-14-12 Made further improvements to hopefully improve print reliability.
The author marked this model as their own original creation.