My hamster loves watermelon.
My hamster, Peanut, that died and my hamster Hamlynn that is alive ate and eat cucumber, lettuce, carrots, apples, spinach leaves, grapes, and even a piece of an ice-cream cone. With Hamlynn I haven't tried apples or grapes but I'm sure she'd love it. It's all healthy, but I'm not sure of the ice-cream cone. Just wanted to see if they'd like it. And in hamster food they do have dried bananas.