[Sprite-1]

Bento boxes are very useful because food such as muffins, cereal bars (those granola?) can be placed into the Bento's sections prior to be handed out. Bananas are a must as are easy-peel oranges.

Healthy pre-packaged snacks, protein bars, salmon and avocado wraps, or sushi all sealed in cellophane and pots of yoghurt and/or hummus are simply great, not forgetting cellophane-wrapped plastic cutlery that can be disposed of after use.

Examples of Bento boxes. https://en.wikipedia.org/wiki/Bento