For Christmas last month, seven members of the Koopmeiners family all got matching hats: Gray beanies with sky-blue lettering reading “Koops Crew,” the name of the family’s medallion-hunting group. Talk about a well-timed gift. Luke Koopmeiners, his brother, Josh, and the three-generation-strong Koops Crew found the Pioneer Press Treasure Hunt medallion midday Saturday at Bruce Vento Nature .