Designer Carsten Jörgensen, who has worked for international companies including Bodum, Starbucks, Crate & Barrel, Target, The Conran Shop, and Ikea, will debut a line of room diffusers at the New York Gift Show next month. The diffusers, all of porcelain, release a scented mist, emit light, and have built-in speakers to stream preprogrammed music or connect to an iPod. They will be available here.