Mine like grass, spring greens, carrots, apple, brocolli,pear, nectarine, purple sprouting,kale and all the herbs like coriander, parsley, sage etc.
Their absolute favourites are dandelions, rose, and for little treats shredded wheat, pineapple, plums, rich tea biccies and they go mad for the smell of chocolate, but they've never had any!
There's probably loads more that aren't jumping to mind atm....