I love experimenting with pen/ink/paper, and have added another layer as part of the hobby. I’m exploring computational art, inspired by the ink drawings I do during ink reviews. Another fun offshoot of the hobby… and all that starting with a few drops of dye-coloured water on paper.
See also: ink review : Pelikan Edelstein Garnet
inkxplorations 
I really really like exploring inks and reading other people’s responses to various inks.