Remix of Finger Pen Holder (Vertical) in OpenSCAD so it's more easily customized. This remix doesn't need support so is quicker to print when using slicers such as Slic3r PE that would otherwise create large support gantries.
The two parameters are the diameter of the finger you want to fit and the diameter of the pen/pencil/paintbrush/utensil you want to use. Use Volksswitch's Measuring Stars to make the measurement.
See earlier remix Parametric Finger Pen Holder (Vertical) for more details