Perhaps of interest to pen enthusiasts, although probably already known, there is a community of collectors of fountain pens that is quite large. One web site is here:
https://www.michpens.com/
Which refers to a show coming up this fall in Michigan. Something for everyone,it seems!
My wife and I were quite the inkwell ( for dip pens, not fountain type) collectors and happened in on a fountain pen show. Wow! Never knew of that crowd.
Jim