DIY advent calendar using favor tins and a free printable. You can put a small candy or toy inside, as well as a note announcing an advent activity. This would also work really well as a countdown calendar to anything--Disney World, Valentine's Day, etc.
Christmas Advent Jar: This advent is made of mini matchboxes wrapped with Christmas-themed wrapping paper. Each matchbox is labeled with a countdown day, and each one holds a Christmas or Winter related activity for the family to participate in.