Mine love celery, bell peppers, lettuce (NOT iceburg), cucumber, mint (herb), coriander, parsley, pointed cabbage, spring greens, baby sweetcorn, sugar snap peas, mangetout, aubergine (not the green bit at the top), spring greens, kale (not often - high in calcium), spinach (again not often - high in calcium) apple, blueberries, pear (don't feed fruit too often cos of sugar content) and carrot peelings they like a load more too but it would take all day and all night to list everything!