Anyone have an alternative to buying a 3D printer to simple print one thing?

I want to print a cluster case for Rock R5 boards + NVMe SSDs (x6 combos) and make sure I can add in the little extras.

I want a single power supply, but control over power individually, as well as access to the I/O and all pins.

I’m thinking of adding a single oLED panel and the ability to swap between boards.

Ideas?