We own a quite cool glass pen (https://www.glasgestalterin.de/Glasschreiber/glasschreiber.html) and I always wanted to design a holder.
I made a board with a groove for the ink bottle and a holder for the tip of of the glass pen. To give the whole thing a more interesting look, I printed a knight of egypt chess figure (https://www.thingiverse.com/thing:1867308) and glued it to the base.
The author marked this model as their own original creation. Imported from Thingiverse.