I'm thinking of assembling a set of new buildings that have little practical value but that add character to rooms, and misc. trade goods for dwarves to buy and adventurers to have.
There are a few that I want to take from existing mods- Display Cases, bonfires, clocks. I'll talk to the mod makers before making any use of these, of course.
Here are some of the things I'd like to add, some of which may already exist, I'm sure:
Desks: Made from tables, look like tables, but dwarves don't eat at them.
Rug: Uses cloth.
Bookmaker's Workshop: Yeah, books. Makes paper, is used to write books. Technically pages and books are made from trees, these trees can be named things like "fine" so we'll have "fine pages" or "leatherbacked books". Books won't do much.
Bookshelf: Thematic construction. Perhaps it may be possible to improve the student skill by reading.
Tableware: Lots of more uses for clay. Good for plates, pitchers, ewers, patters, knives, forks, spoons. All of this to go with the Mug.
Keg: Again thematic. Not sure what it'd be good for.
Sentry Point: A building for ordering civilians to stand around at a spot. Possibly trains observer skill, but possibly not. It would be most useful as a way to keep civilians near the siege equipment they operate. Could also be used to keep an eye on a place.
Stove/hearth: Thematic building for keeping a room warm. May have a "feed fire" job that consumes fuel and produces a lump of room-temperature air that could hypothetically change the temperature of a room.
Altar/podium: Thematic structure; may practice speaking skill.
Practice Dummy: Uses some armor and padding, plus a stock of training weapons, and trains specific weapon skills. Doesn't train armor, "fighter", dodging, or other skills, so no replacement for training.
I'm still thinking up other things to include, and I'll put up some version of this or another pretty soon.