Box 1-7, created by Finnish designer Pekka Kuivamäki, is one nifty shelving system. Each box fits inside of each other like Russian nesting dolls.

Barcelona-based BeaMalevich launched the easily assembled modular shelf to contrast the shape of every other shelf out there. Box 1-7 is composed of seven simple cubes that hang from a single nail on the wall. Each cube hangs from a hand-woven leather rope and can be rearranged to your liking. It’s part ever-changing sculpture, part functional shelf, and part just plain fun.