We got a mill to make our own rice flour. We also use masa.
Milk wise, we use rice
milk and soy
milk. We have come up with recipes for cookies, pancakes, spaghetti sauce, chili, banana bread, etc. We also do tacos with corn tortillas and sometimes have 'beanie tacos' (that my kids really like) where we put refried beans, onions, and sauce on the corn tortillas. Rice Chex and Honey Nut Chex work well for cereals. Does any of that sound like it would work for your family?