Taking the concept of the storage box to the wall, the Onecase is a wall-mounted, colorful system. Designed by Søren Ulrik Petersen for Onecollection, the Onecase can perform numerous functions. It can be used for book storage, holding a picture frame, or displaying treasured knickknacks. Comprised of two connected open cubes, the Onecase is available with an open back or with colorful back covers.