Make a statement with the Opus Shelving System designed by Sean Yoo. The inspiration for the design comes from the Roman wall-building technique known as “opus incertum,” characterized by a distinctively erratic combination of blocks. Yoo came to notice this layout of elements everywhere, from dried-up lake beds in the deserts of Las Vegas to the sidewalks of Los Angeles. He took this familiar pattern and adapted it into shelving that’s made from 100% recyclable expanded polypropylene – the same material chosen for motorcycle helmets due to its light weight and durability. $450. Shop here.