My girlfriend wanted an advent calendar as a birthday present - the one's that have little boxes and each day in December, you get to open a box until Christmas Eve. Well I didn't want to put the typical gifts in to the advent calendar such as chocolates or other mini treats. I got my creative juices flowing. I figured since there was 24 boxes in the advent calendar, why not create a puzzle with exactly 24 pieces. That way, each day she could open a box and it would be a piece of the puzzle. By the end of the 24th day, she would have the 24th piece to complete the puzzle. The completion of the puzzle itself would be a nice little Christmas gift for her.