I remixed the original files because I don't need a bootle holder in my car, but something to hook a bag on the bag of the drivers seat. Especially on longer trips I needed something for my kids to hang their headphones on.

So I enlarged the original hook to 45 mm. That should fit all headphones. I also tweaked a bit on the bottom of the hanger. Now all the hooks will fit in any order.

You can print the short and/or the long version of the hook. Both will fit in the upper or lower position.

Printed with no support on Ender 3 with PLA+.

You need 2 screws 4x16 or 4x20 mm (and maybe some glue) to put it all together.

If the 45mm hook appears much to small in your slicer (happened to me in Cura), just enlarge it to X=30mm with snapped scaling.

layer height: 0.2mm
Infill: 20%
Infill type: Grid
Support: N/A
Filiment type: PLA