I was thinking-- a few years ago we did a play about santa missing and we had to call all the elves around the world to find him. maybe you can incorpate that into your breakfast with santa. Have stations set up with things that they do to celebrate in different countries like spain, mexico, sweden, africa, ect. just a thought.
Why don't you search on some of the "Breakfast with Santa" threads and use some of those ideas.
Christmas Karoke is one of our popular activities. The music teacher has the equipment/software and has it all set up. The kids - small groups, little groups, families, whatever - sing all morning. Some participate for one song, some for hours.
At out school every year we have a lunch with santa. This is for kids in grades k-5. We have a parent dressed up as santa and a craft table. We need other game ideas to entertain these kids. Any ideas?