Very fun!
This is a great idea for a flash! A sort of advent calendar of flash goodies! I love the idea of coming back to this each and every day before Christmas to see what you can get. This is a wonderful idea for a flash animation and I love how you gave it an NG twist by adding Tom and one of his sons (Is it supposed to be Liam?).
Great job man. I look forward to playing with this throughout the month!