So I found another recipe which contained just four items!
1 cup of flour
1 cup of rice cereal
3 tablespoons of cooking oil
I combined the flour and rice cereal, then gradually mixed in the cooking oil. I stirred in the ice water a bit at a time until the dough came away from the sides of the bowl. I rolled it out on a floured surface to the thickness of a cracker and cut it into strips. I baked them on an ungreased cookie sheet for about 10 minutes - or until slightly browned. The recipe made several "crackers."
They are not very pretty, but Lil' Cherub seems to like them okay. If I had to change anything, maybe I would roll them out a bit thicker. They are hard - perfect teething biscuit quality - but also break very easily. That seems somewhat of a contradiction. Well, they snap right into pieces, but the pieces do not disolve very well. So I had to fish several chunks out of her mouth. I think if I made them thicker, they may not break so easily? She might be able to just hold onto them and gum them. I'm still pretty excited to have made them and motivated to try some other recipes!