My 10 month old loves baby bell chaddar and it is easy to pack to go as well so it is very good on the go. I break it since he has no teeth yet. He also loves the mini mozzarella balls from whole foods bocacini I think they are called. I have seen other moms give string cheese but I don't like to give too many preservatives to my son so I try to stay away. Cottage cheese is good too, and american, I mix american into oatmeal sometimes and he loves it.