The tradition of having a nativity scene or “crèche” was made popular by St. Francis of Assisi. It is a reproduction of the cave in Bethlehem with Mary, Joseph, the infant Jesus in a manger, shepherds, angels, and animals. Each night during Advent, children are encouraged to place in the manger one piece of straw for each good deed done that day by a family member. This Advent tradition combines the spirit of conversion and the coming of Jesus. There is a blessing ceremony provided by the Church in the Book of Blessings for the crèche.
Ref# Fr. Hal Stockert, Fishnet