KUSU-DAMA (薬玉)
Origami balls are called “Kusu-Dama”.
They were introduced into Japan in the Heian period from China (The Heian era is from794 a.d. to 1192 a.d.
)
Originally they were made of herb medicines put into brocade and decorated with artificial flowers into an ornamental scented ball. They were hung on a reed screen or a pillar to give a wide
berth to the evil spirit or as a charm and bringer of good luck.
More recently, the Kusu-Dama is made from Origami paper, and the shape of all polyhedrons. So, it is called "unit origami".
Many Japanese people enjoy making and decorating the Kusu-Dama. They are still developing today.