For 15 years, Rob Kampia has served as executive director of the Marijuana Policy Project (MPP), a nonprofit group dedicated to the reform of marijuana laws. In that capacity, Kampia, 41, has pursued two goals. One is the steady advancement of the organization, which he founded out of his Adams Morgan home in 1995. And the other is cultivating an office environment suited to his sexual appetite. A brief inventory of Kampia’s knack for mixing business with pleasure: