ergonomic apple magic mouse adapter holder

Have included a suggested .3mf file (Prusaslicer 2.6.x) and a  .step file.  PLA+ is fine.
 

Note 21/12/2023:
Please use just the .3mf file.  The .step file is not to scale

Note 02/01/2024:
Corrected the scale of the .stp and .stl files (v2)