Use multiconnect to attach your multiboard to your wall or even another multiboard. This allows for easy removal of that multiboard, like what you would have using french cleat - but with a way tighter hold on your board.
Also stacking boards can be used to easily take parts of your board to your workbench or switch parts of your boards based on your current needs.
Print with 0.2mm layer height.
Feel free to use the STEP files to create your own variations.
Credits to Jonathan (KeepMaking) for creating multiboard.
The author remixed this model.
Used as the base for my own wall mount and/or stacked mount design.