Yes. Many items are ready-to-eat or ready-to-drink, come in resealable pouches, mini sizes, or multipacks, and are explicitly described as convenient for backpacking or on-the-go snacking.
Reviewers commonly describe these items as kid-friendly and suitable for families and young children, noting they work well as convenient snacks for kids and for quick family breakfasts.
Options include freeze-dried fruit, puffed breakfast cereal, soft-baked oatmeal and date-and-nut snack bars, ready-to-drink plant-based protein shakes, and high-energy trail mix.
Many snack bars list about 2 grams of protein per serving, while ready-to-drink plant-based shakes list about 20 grams per serving.