Made on request for someone's friend who needs a bit of 3d-printed help with using a keyboard. 

Shared here in case of it can be used by somebody else.

Scale the model to fit. The model was made to fit my index finger.

Download the FreeCAD source file to customize your own version.

Releasing all files under Public Domain license.

Source in my GitHub: https://github.com/atoomnetmarc/3d-models/tree/main/Finger%20stylus