Made this anti-fall locking spool holder to hang my filaments above my printers. I have a configurable shelving system under which I keep my stuff.
Since shelves are strong enough I figured I'd feed filament to my printers directly from top since they are all direct drive now. This way heavy filament spool won't act like a pendulum on top of my printers.
It has two holes from which you could hang or screw one side alone to a wall or something if needed. I'm using reusable cable ties to hang for now since they are pretty solid and I can re-adjust the slack.
Print the knob with shaft sideways so it will be stronger. It will require support this way but it will be way stronger.
Instagram post for upscaled version: