Gorgeous furniture is only half of Milan Design Week, the largest, most prestigious design fair of the year. The other half? Head-scratching conceptual projects and design experiments that push the field into the future. Think about interior designs that morph over time, stools made from 3-D printing scraps, and even a petting zoo that stabilizes your mood. We scoured the city to find the best, most cutting-edge designs. Think of this as a guide to the living room of tomorrow.