The bantam eggs make really cute little hard boiled eggs, and also neat little fried eggs. The kids seem especially charmed by their small size. I use more bantam eggs than standards because I usually save more of the standards for selling. I don't worry so much about size adjustments, just guess-timate 2-3 banty eggs for 1 standard. Or use a couple dozen or more to make a big batch of French Toast batter.
We call those other sandwiches "Bird's Nests" and grill the cut-out hole along with the rest, and eat it on top of the nest.