Hi
@S2uk87, are you carb counting or on fixed doses of insulin?
If you are carb counting then you can have any yogurt you fancy, as long as you bolus for it, if you are on fixed doses it's better to stick to the lower sugar ones, if you go for a plain one you can always add things to jazz it up.
I carb count and I like greek yogurt with some toasted sesame seeds and a drizzle of honey
As for snacks, again it depends if you are carb counting or not, personally I like a bowl of salad or a few crackers. Or crisps
I know you have put you have type 1 in your post but it's helpful to add it to your profile as well, so people can see without having to ask, and then you can get more relevant answers to your questions