For millennia, the Baniwa people, inhabitants of the Rio Negro in the Amazon, have used arumã fibre (Ischnosiphon spp) to create sophisticated basketry, renowned for its elaborate designs. Baniwa basketry is used by both men and women in agricultural activities, such as processing and storing food, making it part of the traditional agricultural system of the Rio Negro, recognized as Brazilian cultural heritage. The fibers are extracted according to the ancient management techniques practiced by the Baniwa people and are coloured with natural dyes. The marketing of Baniwa art supplements family income while encouraging the preservation of traditional knowledge and cultural appreciation.