My main phone died and as a backup, I have an old Pixel 3A. I was looking around online and didn't find something I 100% loved so I hopped into CAD and drafted on up. After a few versions I came up with a pretty decent looking case. This case is printed out in PLA and fits without any play. The back inlay can be customize by removing the top and bottom layers and changing infill pattern and density, or can be printed solid along with the rest of the case.

Although this model was designed with multi color in mind, the entire case can be printed in a single color with no issue.

If you happen to have this phone and print it out, let me know!