Contemporary artist–cum–social activist Ai Weiwei has collaborated with Belgian skate shop The SK8 Room on a series of three skateboards that reference the artist’s works. (Sunflower Seeds, pictured, was shown at London’s Tate Modern in 2010.) The first 25 of each version—there are 150 per edition—come with an Ai-signed certificate. All feature quotes by the artist. To wit: “There are no outdoor sports as graceful as throwing stones at a dictatorship in the world.” Fittingly, 20 percent of the proceeds benefit Skateistan, an NGO that promotes education through skateboarding lessons and arts-based workshops in Afghanistan and Cambodia. From $405; thesk8room.com.