Instead of gingerbread houses- Turn ice cream cones into christmas trees & decorate. Much easier for kids! Or you could add a tree by your gingerbread house. I don't think I'd do the cookie inside, or the lollipop stick ;) just a nice tree.
rice crispy treat houses - easier to make/more fun to eat--totally trying this after a childhood dibacle with gingerbread houses! Pluse rice krispie treat houses would be dairy allergy friendly for my neice