The Christmas Sacks is a magazine story.
On Christmas Eve, Stephen and Bridget tell Thomas and Percy about Christmas stockings. The two engines want to receive presents in a stocking, so they suggest some coal sacks be filled with them. Diesel tells them that their suggestion is very silly, but Stephen, Bridget, and the Fat Controller go to the Works and wrap up presents of engine parts. On Christmas Day, Stephen and Bridget go to Tidmouth Sheds to open the engines' presents. Thomas and Percy are happy to see their gifts, whilst Diesel cannot believe what he is seeing!