So, finally I met someone who knew what a Gocco was and wanted to use one. I've had one in a box for the last year or two, and I had never set it up and used it for anything. It was time.
The first step was watching the "How to Gocco" video that came with the stuff. that I should have done a long time ago. I won't thrill you with the details of that until I can get some screen captures.
The artwork was easily procured from a stack of source material that I have been collecting over the last, oh, say, 32 years.