or make your own pancakes at home and bring them in, all you need is flour, sugar, baking poweder (to make the fluffy) one egg, milk and melted butter thats cheaper than buying the pancakes and also solves where to cook them.

Fruit, healthy for children a good idea, not cakes? Actually I have scrambled egg with smoked salmon (real deal, not farmed pap).On toasted sourdough if I am in Bavaria, Homemade toasted soda in the U.K.
The onslaught that may occur latter for dinner, demands no full English in the morning, or Pretzel, salami, cheese, bratwurst German breakfast.

my londoner nipotina celebrated her 7 months with porridge and banana breakfast but she knows perfectly well when I talk to her in friulano and smiles politely, I suspect that when she jokes it's in English, when she laughs loudly it's in Spanish, when she eats properly and with gusto it's fully Italian
   

Ginger bread! not the biscuit type. Use Jamies basic bread recipie then grate lots of fresh ginger and ground ginger into it, some sultanas and dried fruits. Any warm spices will be nice, cinnamon or nutmeg.
When i think of christmas-
Breakfast foods that are a treat and indulgment. Flapjacks or chocolate croissants. Or maybe sausage and eggs ( you can tell them that there Santa-sausages haa.
This is a hard one- best of luck xxx

gingerbread is a lovely idea!