The Contemporary Jewish Museum comes to life for a special holiday edition of Ritlab (Ritual Laboratory). Tour the exhibition 'The Radical Camera: New York's Photo League 1936-1951' in a quick Art Flash Gallery Chat with a museum curator. Take a Polaroid with Photobooth's Vince Donovan and then create a decorative frame with letterpress mavens from Hello! Lucky. Get in on a rousing game of Major League Dreidel or enjoy a concert by world-renowned a capella Leonard Cohen choir, Conspiracy of Beards, that includes a few Hanukkah favorites. Free with museum admission ($10 - $12).