A couple holders for 40mm case fans and a spot for the wrench they give you.

I printed in PLA and found no warping but your results may vary. I wanted to mount a few 40mm fans in spots around the case to play with cooling.  I didn't notice any difference but it was a fun project and I like the small Noctua fans.  The wrench holder is handy as I didn't have a bit for those screws for awhile.

Everything was mounted in case with double sided foam tape.  There is a recess on the model to account for some of the thickness of the tape. Designs were based around an NHl12 cooler and a gigabyte RTX 2070.