A hopnucker is a traditional folk instrument, typically made from a hollowed-out gourd or wood, used primarily in the Appalachian region of the United States. It produces sound by the player sucking air through a small opening, which causes a thin membrane, like a piece of paper or animal skin, to vibrate. The instrument is often associated with Folk Music and storytelling, adding a unique, rustic sound to performances. While not widely known today, it represents a part of the cultural heritage in American folk music.