@adders True. It is amazing how really obscure things either persist or have a revival. Hobbyist/historians are still making chain mail for goodness sake and I find that comforting for some strange reason.
I'm hoping that new tech like 3D printing will help keep some old tech alive (ie. manual typewriters, while it makes no sense to manufacture them anymore, someday we might be able to 3D print one up on demand if we want.)