Daggers were once made from human thigh bones in New Guinea

New Guinea warriors harvested thigh bones from their dead ones to make ornamental daggers for killing enemies and possibly "cannibal feasts", a US-based study has revealed. While daggers were made from shin bones of large flightless birds called cassowaries, researchers found human daggers served as a symbol of prestige. The daggers were used until the 20th century in hand-to-hand combat.