This 'ejiko' baby kokeshi is based on traditional baby baskets of northern Japan. These were used so the baby could be left safely while you were working in the fields nearby. They were filled with straw and sometimes ash which could be easily cleaned out. There seems to have been quite a variety and some were actually wooden buckets. Kokeshi also come from northern Japanese so ejiko kokeshi are fairly common though I haven't seen another one with a natural wood finish like this.