Veggies are always good. Frozen peas are good once or twice a week.
Make sure to warm them up, de-skin and cut or lightly mush into bite
size pieces.
Here's a whole list I've tried on my bozos: lettuce (dark
leaf), spinach, cucumber, zucchini, oranges, apples, grapes, bananas,
watermelon, peas, dehydrated seaweed, shrimp, krill, bloodworms,
earthworms(put in paper towel for 2 days to purge the dirt out of their
system). Plus they may like some other things you'd never
think of.
I've even tried pineapple and tangerines.