netsukes

Netsuke traces its roots to the Edo period (17th to 19th century) and famed for the artistic and intricate beauty, the utility of the Netsuke was mitigated after the traditional Japanese dress –Obi and the Kimono went out of fashion. The change in attire made Netsuke a collectible instead of being a utility item.

http://www.ivoryandart.com/product-category/netsuke/