Well, mine get the same thing every day:
Morning:
Cilantro (coriander)
Green Pepper
Grape Tomatoes (halved and seeds taken out)
Evening:
Field Greens (radiccio, oak leaf lettuce and one other type)
Cilantro
Green Pepper
Red Pepper
Cucumber
Snack (floor time):
Baby Carrots (2 quartered so 8 pieces)
Red & Green Pepper (matchstick cut)
I also give them an occasional treat of fruit (maybe two or three times a week).
This diet seems to be working for them, though I'm a little concerned because they have absolutely no interest in their pellets or in their water bottles, so they're getting most of their nutrition and water from the veggies, plus they go through about 4 cups of meadow hay a day between the two of them, but there's been no diarrhea and they're bright eyed and happy, so I'm guessing these foods are safe for them.