Joey Hess, a formerly prominent Debian developer and author of git-annex, etckeeper and a bunch of other open source projects is also on Patreon: https://www.patreon.com/joeyh

Unfortunately, he's only getting $500/m, which isn't much even for someone with a very "off-grid" life: https://joeyh.name/blog/entry/notes_for_a_caretaker/