As we begin unpacking the boxes of Christmas decorations and getting ready for the holidays. I found a sweet project for an magnetic Advent calendar that you might want to try with your family. It uses decorative papers and little candy favor tins (found at most craft stores in the cake decorations). The idea I found online at Makoodle has a free download for the number papers as well as instructions. It also has a download for papers for little activities to have inside the tins.
If you don't have the metal 12 by 12 sheet the tutorial mentions, an old cookie sheet or a metal serving tray can easily be spray painted and it will work great!