A netsuke is a small decorative carved ornament that can be hung from traditional Japanese clothing.
A wooden rat
a rice bale with mice made of bone
two intertwined horses made of bone
$125 each
reference:
https://www.b-important.com/store/netsuke-carved-ivory-horse/
https://www.eldreds.com/auction-lot/bone-netsuke-in-the-form-of-a-rice-bale-with-reli_88B1D21A3F