I didn't like how much the PCB in my LMN-3 flexed, especially when using the joystick, so I made this standoff that fits inside the enclosure and holds the PCB without contacting any components. It fits in the case I've made for it (mine is printed but should exactly match the laser-cut case), but I included the .blend file if you want to customize it for your case.
The one-piece file is too big to fit on an Ender-3, but the split files do.
The author marked this model as their own original creation.