lots of great ideas already.
we weren't parents who obsessed over how much the kids ate. if they were full of energy, we knew they were fine. but there were times when we really didn't know what they were going to eat. we'd set out a toddler smorgasbord and see what happened. we'd include a lot of what's below, plus black olives, peas, banana chunks, cherry tomatoes (cut), red bell pepper slices, parmesan chunks (our one daughter hated milk, ate cheese), chunks of ham.
we laid off the shakes because then they just wanted sweet stuff.
don't forget... their stomachs are only the size of their two fists!