Well, I was sitting around looking at modding section (especially the Wizards Tower) and thinking "huh, what about books and scrolls and such?"
Couldn't you (in theory), make an inorganic item that has no use whatsoever (like a craft?) that is made from plant fiber woven together to form a mat-like object which can be studded with metal, encased in glass, gems or bone. If you have "show history", then shouldn't anything of "quality" have history written on it in various forms? Then you can have this object passed around your fortress, having thousands of things engraved or gilded onto it. Then you safetly store it away somewhere in a stockpile to sell or to keep as a human player to "read" over your fortress history as compiled BY the inhabitants?
Then, of course, you could make a "custom workshop" that could be just one of these things that would act like a wall-ish object.
Better yet? Make it a reaction so that it can be put up like a window.
Ink could be plant extractable. Put into vials. A custom "writers workshop" would have the ability to take ink and put it on an object like gilding metal onto an object. Else you could sell it for some cash.
You know, like a painting? Make a specific "useless" object that can somehow be added to, then put up like a painting so that your noble will be like "I WANT 3 IN MY BEDROOM" and all the liaisons are like "wow, in 547, some dude ate cheese?" Your room values could skyrocket.
However, as great as it sounds, I have no idea how to even do this, or how to even begin. It was just an idea for all you out there.
Thanks for reading,
TGL