Choose low-fat dairy options over whole milk and full-fat varieties; they usually have all the same nutrients and benefits without all the fat. Individual packs of cottage cheese and yogurt make great snacks, as do low-fat string cheese and individually wrapped cheese squares. Yogurts can be high in added sugar, so be sure to read the label and pick those with little added sugar. Take advantage of lunchtime as a great opportunity to give your kids natural sources of calcium.