When my kids were little we used to buy an advent calendar that was made of cardboard and had chocolate behind each of the doors. Having three children they had to take turns at opening the door for the particular day. Last year I made an Advent calendar for our house This year I have made one for my elder daughter who has just moved into a new house. This calendar was made using left over pieces of fabric and some calico. The pocket at the bottom opens up on Christmas eve.