in Q & A, inkhorn came up.. and i touch on pens, and ink, and thought about all the words i use for writting.. and then about other words for writting.. and there are so many.. it might be fun to explore what we use to mark a surface, and what surfaces we mark, and how, with what.. open to all technologies.. from the oldest to the most up to date..

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ink horns= ink bottles.. i have some pens that i fill from an ink bottle, and few pens that i dip into an ink bottte to use. my every day fountain pens tend to use cartridges.. (purple ink,at the present) or are pilot disposable fountain pens.
bottled ink is india (black)--a pint size bottle, half used, and a small bottle, (2 oz.?) in what used to be called peacock blue, but is now called "de mar" --sea blue.