We've all seen the tales / screenshots of the dwarf wearing 27 stone crowns simultaneously, and I'm sure we've all got dwarves running around performing all their tasks while carrying 5 scepters, 8 figurines, & a large gem. (With no pouch, backpack, or bucket, of course, they're just holding all of these in their hands while they're smelting pewter or mincing beer or whatever.) This gets another layer of silly when you consider trade requests: Why does the Mountainhome have "demand" for crowns & scepters? Don't the nobles already have these tokens of authority, and why would they allow anyone else to have them?
Suggestion #1: Impose a hard limit on the number of personal adornments that can be worn at a time, determined by physiological constraints (1 ring per finger, 3 earrings per ear, 1 crown, no more than 5 amulets, etc.), and soft limits determined by social mores (procedurally generated by each civ). Dwarves who have created a masterwork, or earned a combat title, or have reached (and maintained) a certain level of skill in a profession, or fill a position of responsibility, thereby gain the right (or in some cases the responsibility) to wear tokens indicating that achievement. e.g., one civilization might restrict the wearing of crowns to dukes & monarchs only, while another permits their use by offices as low as broker. A third civ might mandate that all militia captains should carry scepters (particularly ones made of bone). Another civ might create identical copies of a certain ring, to be worn by all members of a specific guild. Etc. Dwarves wearing tokens which they have not earned, or too many bangles than is considered socially acceptable, may be punished, with possible penalties including item confiscation and grudges from other dwarves with high Modesty. Dwarves with preferences for these types of items can still indulge these tendencies, by storing the items in their bedrooms and changing out said items every time they sleep. Urist's unhappy thought of not being able to flaunt her whole collection of amulets should be balanced out by how she took pleasure in choosing which amulet to wear today. These societal guidelines should also have exceptions for dwarves wearing their own handiwork: For example, say a given civ has a law against common citizens wearing more than 2 items made of gold, but its Metalcrafters have a special dispensation that allows them to wear double that.
Suggestion #2: Expand the list of items that can be made, to include stuff that seems far more reasonable to produce / collect / wear / trade than 8 million stone mugs.
Buttons, belts, handkerchiefs, hinges, figurines of animals (i.e., toys), plates, bowls, silverware, slingshots, combs, hair/beard ornaments, brooches, snowshoes, animal harnesses, plows, locks/keys, pocketknives, spatulas, etc.
Their full functionality doesn't really need to be implemented in Fort mode (needing a specific key to unlock a door, and realistic field-plowing, would require a lot of work on Toady's part), but they'd still be valuable as trade goods, and it's far easier to rationalize that your fort's trading partners could use some more commonplace useful articles like bowls, combs, & door hinges, than that they're apparently suffering a "shortage" of scepters & crowns. It's also a lot more realistic to see that Bomrek is wearing a vest with 11 buttons on it than to see that he's wearing an entire tower of 11 stacked crowns.