In her book Antiques of the Future (Stewart, Tabori & Chang, 2006), author Lisa S. Roberts offers a colorful, playful tutorial on design icons of the past 25 years. In her historic townhouse, she does the same. Karim Rashid’s Oh-Chair perks up her office. Gaetano Pesce’s Up 5 chair enlivens her son’s room, and six Jasper Morrison Air-Chairs surround her conference table. Roberts insists each object has eminent, everyday functionality. "I integrate each piece,” she says. "I make them part of an overall low-key environment."