Goblet

From DwarfFortressWiki

Goblets currently have no function except as a trade good (0.28.181.40d) - dwarves will drink directly from a barrel, bucket, waterskin or water source. Goblets can be manufactured from metal, glass, rock, or wood. Rock goblets are called mugs. Wooden goblets are called cups. Goblets will always produce 3 from 1 raw material, are worth the same as other crafts, and are thus a sensible choice for crafting. If you have a legendary stonecrafter, it is a good idea to provide him with a native gold stockpile(native gold mugs have the same value as metal gold mugs) because of the easy quality bonus

As of 0.28.181.40d Goblets are listed under the All section of the trade 'g' menu unless they are in bins with other trade goods(crafts for example).