I find it even harder as I don't buy Nestle brands, including Uncle Tobys

I do carrot sticks with dips sometimes - I have a great dip recipe that they love but you could always use tzatziki, avocado dip or something else. I try to reduce the carbs/processed food at night if I can. Tend to have yoghurt for after school than at school, and sometimes they have seaweed biscuits if I havent had time to do much. Cheese cut into cubes, they love small cans of tuna in brine which is good for their brain... but they will eat a fair bit of fruit as long as its peeled and cut up, so can do strawberries to apple to orange etc. So hope thats a few ideas