Wikipedia
Miharu-goma
are angular, brightly coloured, wooden toy horses produced in Miharu Province, Japan.
Such toys have their origins in a legend concerning Sakanoue no Tamuramaro. According to the legend, he either received aid from a magical wooden horse or was able to win a battle due to the timely appearance of a herd of wild horses. Due to the original toys being carved from offcuts of Buddhist images, Miharu-goma have always had superstitions attached to them. Although commonly made of painted wood, they are sometimes constructed from straw of even paper. They are said to be able to carry messages to the gods on behalf of petitioners.
Miharu-goma have existed in Japan for around 1500 years.