I printed a couple of these brush stands. They're designed specifically for the RazoRock Bruce and Big Bruce models, but they ended up working very well for these AP Shave Co. brushes.
Here's a link to the design (not mine): https://www.thingiverse.com/thing:3116295
Here's a link to the design (not mine): https://www.thingiverse.com/thing:3116295