I was thinking about Advent Calendars the other day, the way you do, and I had this idea for one - 24 mini takeout boxes with a gift inside each one to open every day up to Christmas.
Aren't they cute? I'm going to hang mine from the Christmas tree, I think they'll look great! :) Once Christmas is over, I'll just stack the boxes inside eachother and use them again next year!
Oh, and if you're wondering where you can get 24 mini takeout boxes, you'll have the answer sooner than you think! :)