Hi, I did a simple bracket that should be easy to move around. The spool holder has a stopper on it's end to stop the roll from falling on the printers. The Filament bracket should be install from top to bottom and and the bracket hook should be small enough to fit on the wooden bar without having to remove the filament roll in front on it.
I did the simulation in Fusion 360 and all the numbers looks good. All that is left is to print it and see the real life result.