The umbrella sedges – or Cyperuses, that include the better-known papyrus – can only grow in clean water, and it takes four to six months to harvest them. It is a traditional plant material in the coastal indigenous woven culture. The skin of the sedge stem is removed, while avoiding mildew problems. By collaborating with Sumi Dongi, a local craftsman, the umbrella sedges are weaved on structural metal frames to create lightings and stationery with a contemporary take, allows the crafts to be produced in small-scale systems.