A New age or modern Hippie.
Like traditional hippies, neo-hippies are political and motivated, to some degree. Neo-Hippie could be difined as someone who meets the all, if not most, following standards: Liberal in political veiws, sports certain fashion attire distinct to the "hippie" family and plays hackie sack. Neo-hippies also may be vegetarian and have an avid, if not obsessive, desire to recycle.
Hey, look, it's Kasey... she's playing hackie sack, what a neo-hippie.