The third day of the third month of the year is Doll Festival, Ohinamatsuri. This is the girls festival much like the fifth day of the fifth month is boys day. The may festival became "Children's Festival" and girls featival became more of a commercial opportunity that holiday.
Be that as if may this is a great day to make a doll. It doesn't have to be warm and cuddle. Just has to look great. Polymer clays is great for doll making. here are some of the dolls made by others.