Olsen also appeared in many Sigma Chi fraternity promotional campaigns; Merlin, along with his brother Phil, was a Life Loyal Sig, Significant Sig (given to members for distinguishing acts outside the fraternity) and a member of the Order of Constantine (given for service to the Fraternity). Olsen donated one of his cleats, which were bronzed, to be used during the annual football rivalry between two Las Vegas high schools, Eldorado High School and Chaparral High School, which both opened in 1973. Each year, Olsen presented the "trophy" in the ceremony at the rivalry game.