No Way Home for Goblins

Everyone in Faldihr knows the little green folk of The Lucky Goblin. While they don't speak a lick of Common or Dwarvish, their squabbles are entertaining and their ale is delicious.
Strangely, however, they don't seem to speak Goblin, either. In fact the wee folk speak Sylvan, and they are from the feywild. They arrived here by accident and would very much like to return home, if only someone could find a way!
This campaign takes place in the dwarven city of Faldihr and its surrounding mountains. Recommended languages include Sylvan and Dwarven.