Received this from Oblivious Adventurer in Windurst(after completing 3 mock tests from Proctor Moogles)... I picked Castle Oztroja -> Furnishing for the answers. Very disappointed!
Foss requires 5 Rusty Buckets for the quest "Buckets of Gold" in Bastok Markets. He gives you 300g in return. Quick and easy way to dump the buckets for slightly more gil than NPC'ing them.