My local makerspace has a pen plotter, so I used it for printing out a few random doodles I created with Blender.
These were drawn with a simple gel ballpoint pen.
I used the Freestyle SVG Export addon to first create freestyle contours and then export them, well, to SVG.
The plotter was an AxiDraw V3, which can be controlled via a very simple Inkscape plugin.
It took about 20 minutes to draw each of these:
The shapes were generated with a simple geometry nodes setup.