Christmas card to print out then fold and stick before decorating.
Save the images in a large format from the illustrations,(which are only reduced in size on screen) or print them off direct.
Christmas card to fold
Letter to Santa Claus
The child can color and decorate their letter, then add a few words for Santa.
And why not cut out pictures of the toys they're hoping to receive from Santa from catalogs, then paste them into the letter...that way Santa can see exactly what they want!