Maybe not that niche for this group, but I love pen plotting. I use code to create drawings and then pen plot them on paper [0]. The ability to bring something digital into the physical world is really fulfilling for me and makes the process much more tangible. I have an Axidraw A3, and it might be the best purchase I ever made.

In the last few months I haven't done much as I'm currently obsessed by gamedev. But now when you reminded me, I want to plot a few pieces I started last year and never finished.

[0] https://muffinman.io/art/