I bought a 3D printer in the summer of 2021, but was not able to print my own designs until I learned how to drive a 3D modeling application. I finally found FreeCAD, which makes more sense to me as an engineer. I was able to create this case after 4 tries:

The case requires 4 M3x12mm hex head bolts and M3 nuts. Additionally, I removed the SMD LEDs and soldered 3mm LEDs standing 8mm off the board. The through-hole LEDs are a bit brighter than the SMD LEDs. The .stl files are available in the files section of this project.