A netsuke is a miniature sculpture, originating in 17th century Japan. Wikipedia

type of bead used to secure an inro in one's belt Wikidata

A small, often collectible, artistic carving characterized by an opening or two small holes (紐通し (himotōshi)), most commonly made of wood or ivory, used as a fob at the end of a cord attached to a suspended pouch containing pens, medicines, or tobacco. Netsuke originated in feudal Japan in the late 16th and 17th centuries. Wiktionary

Miniature sculptures. Wiktionary (translation)