Josef Lada. A Czech Christmas - I've just saw such a calender :)
Czech Easter pomlázka is a braided whip made from pussywillow twigs. It has been used for centuries by boys who go caroling on Easter Monday and symbolically whip girls on the legs.
Works for children by the Czech artist Josef Lada (1887–1957)
Josef Lada - Houpy, houpy, houpy, kočka snědla kroupy... (Národní říkadla)1921. Czechoslovakia