Not sure if it fits, but it’s pretty functional. I 3d-printed plates / mounts / shelves for my home mini server. I built the case itself out of wood (quickly and poorly, heh), and used a pair of 12U rails - and then used shelves from a 10" Server Project. It results in a reasonably tidy setup.
I’ll need to conquer my fear of PETG and print them with a more resilient material; I actually lost my nvidia shield shelf today because it warped so much from the heat. I could also design a proper shelf for it that is more a combination of side brackets for it, leaving the bottom exposed…