My mother has this rack for hanging spice bottles. You hand them by the cap, but the original caps started to crack and she couldn't find a replacement. So I spent some time with caliper and Fusion 360 and voila!

The fit is almost perfect, you may need to file down the inner thread for easier screwing on.

Prusa

Prusa Clone

Yes

No

0.15

15

I used PLA, red color as per my mom's request.
Nozzle: 205
Bed: 70 at the beginning and down to 65 after the raft is finished.

Thew first one I printed with 1.2mm walls and 20% infill. As I am writing it, my printer is sweating over another caps, this time at 0.8mm walls and 15% infill. Hope it will be stromg enough.

Rotate the part by 153 degrees to lay it flat on the angled top surface. This way no support will be required.