This is kind of a mod, but more of a project I am working on for using spare chassis for other things:
3D printer controllers usually are just mounted to the side of the printer, or some come in large controller boxes (with loud fans)
So, I was thinking about taking mITX or Micro ATX cases and using them as a single/multi printer controller and power housing unit.
Can use quiter cooling with more efficient airflow.
First mod is a PCI bracket for mounting a control board. Im using the Big Tree Tech SKR 1.3 (which has the same dimensions and mount locations of the 1.4