The Catholic Toolbox has a great compilation of information and activities to help you celebrate the feast Immaculate Conception (December 8th) with your family:

"The Immaculate Conception, a solemnity, is the patronal feast of the United States. It is one of the few Holy days of obligation on the Church calendar -- that is, all Catholics are obligated to attend Mass on this day. As this feast occurs early in Advent, it is a perfect time to consider Mary and her important role in the celebration of Christmas."

Read more...