My Desk wasn't tall enough to fit a tool box under it. So here are the lifts I made to make the desk sit higher.

I recommend that you set your slicer so that you have about 2mm thick top surfaces. I think I used about 60% gyroid infill.
I use Polymaker PLA Pro, which has held up well for me. You should be able to scale these up or down to suit the size of your desk leg within your slicer.
Which should be Prusa or Orca...😉