Japan's k2m design agency was founded by two architects who saw the waste being created from building materials and wanted to do something about it. Inspired to give a new life to unused scraps, k2m started upcycling leftover coated fiberglass and high-intensity polyester normally used to construct stadiums and tents.

k2m's latest release, Katamaku, is a collection of card cases, pencil cases, document folders, book covers and pouches made of heavy-duty canvas fiber extracted from the same material used to build the iconic Tokyo Dome. Despite the accessories' paper-thin appearance, the plastic-like roofing substance is strong, durable and weatherproof.

The small goods are inspired by origami, taking a single sheet of fiber to fold into simple designs. "Katamaku will make people realize the beauty in materials that are not usually seen up close,” says the founders of k2m. We agree.

Shop the accessories here, with prices ranging from approximately $12 to $27.