My local Barnes and Noble carries about 15 different brands of (good) notebooks from around the world, and a large selection of writing implements that aren’t fountain pens. Doodling, writing, drawing, whatever is enjoying a revival. Not just fountain pens.
The stationary shop around the corner from my office downtown has a lot of fountain pens and dozens of inks. Every time I’ve been in there is has been busier than it seems it should have any right to be.