Advent Calendar for the fridge

I have an idea, now I just need to find the supplies...cheap.  I want to get 12 of the round magnetic tins that some people use to store spices on the sides of their fridge.  Decorate them with ribbon, cut out some holiday designs on my Cricut, and print numbers 1-12 in different fonts and stick them on the front.  Of course we will have to start opening them earlier then normal since Kurt will be with his family for Christmas...but that just means I get to celebrate Christmas twice;-)