Genius Jones, a three-year-old kids' furniture boutique in Miami, has launched geniusjones.com, a new website with the variety one expects from a large-scale retailer but the personalized service of a small shop. While the site offers the usual suspects, like Bugaboo strollers and Oeuf cribs, it also showcases a unique inventory of vintage items (say, mini Bertoia seats) and pieces from outside the U.S., including a children's flower chair by Spanish designer Agatha Ruiz de la Prada.