A holder for the BPCMH (https://www.printables.com/model/815732-build-plate-cleaner-microfiber-holder) wich fits the Hex Wall (Honeycomb Wall) but also the XL (with hammerhead nuts) and also can be fastened with screws to a wall.
I used version 5 but also made a version 6 to acces the bolt heads more easily.
The author marked this model as their own original creation.