Calendars make counting down the days to Christmas even more fun because they're stuffed with surprises -- and they're easy to make. Tack 25 decorated, candy- or trinket-filled envelopes to a corkboard or similar surface in a tree shape; top the arrangement with a bow. Or transform a sheet metal memo board into an advent calendar by writing the numbers 1 to 25 across one side in red or green and adorning it with a pretty bow or ribbon. Add one magnet from the festive Countdown to Christmas Magnet Set to the front of the calendar for each day. With fun shapes such as candy canes, mittens, and gingerbread men, your little ones will delight in the countdown to the big day.