Advent Calendar - Calendrier de l'avent inspiration
Carter, the neighbor who just came over for a banana:
The genius who created this adult-version Advent calendar: | 32 People You Wish You Had As A Best Friend
Christmas Advent Calendar Wall Chart (full tutorial with free printables!)
Santa calendar counting down the days until Christmas
Scripture Advent Calender - if making this for festival and be sure to specify if these are just bible scriptures or are all LDS scriptures to buyers will be aware of that before buying. Package it so that all the envelopes won't be lost.