Aye... Most of the time I am just looking for something to make my dorfs do. Maximizing trade goods? Stuff your clothing and just make prepared meals. Proper roasts made from quarry leaves/whip flour/dwarven syrup/high value meat (or at least huge meat stacks) eclipse lower end artifacts in price easily. Particularly with trees and general-purpose OP herbalists, you can keep several cooks going none-stop. Add in some trap lines to the caverns/trap choke points to mix in high value meat (everything from the caverns is at least x2 iirc). You don't even need close to legendary cooks to buy out early caravans with a handful of "prepared food barrels" worth 10-20k each.
Bone crafting isn't that great of a skill to level, but if you lack metal they could always be masterwork shell armor? If nothing else, decorating/crafting with the shells disposes of the "garbage" while making a use of it. You can decorate peasant beds with them as well. This serves as a cheap, easy decoration that should keep them more than happy. Gems are a pita to use for peasant decorations unless you are using (magma powered) glass or stone... and even then they have to be cut first. The value is far more than a peasant typically expects anyway. Just build a furniture stockpile near your craftdorf shop and begin decorating beds... or tables/chairs for dining room.