Museum Quest is the name given to a sidequest in Baten Kaitos: Eternal Wings and the Lost Ocean. The quest consists of filling the museum in Duke Calbren's Manor with rare pieces. Later in the game, speak with the elderly curator and he'll tell you that the museum could use four pieces. Bring Thunderfish Bone, Adventure Novel, Golden Pick Axe, and Delinquency Stone back to the pedestals and the man will offer Broken Birdie in thanks.