Green leaf lettuce is a hit, here, as well as fresh brocolli and cauliflower. We tear it up and put it in a bowl, or just weave the lettuce it the bars of the cage to make them work a little harder. Mine have no interest in fruit, either, so I quit trying. They love cereal (Cheerios, Chex, Total, etc) and boiled eggs smashed up. They make a mess with Millet, but they do love it, so they get that as a treat on occasion.