Individual servings of anything
The recent trend to package small quantities into 100-calorie snack packs is a way for food-makers to get more money from unsuspecting customers. The price “per unit” cost of these is significantly more than if you had just bought one big box of cheese crackers or a bag of chips. This is what you should do. Buy the big box and then parcel out individual servings and store in small reusable storage bags.