Plastics contain petrol-based coatings (forever chemicals). Protect your children from harmful chemicals, but use plastic alternatives for kids' lunches. Some ideas are

#1 Caraways - These are non-toxic, ceramic-coated non-stick containers for food-grade products. They keep fresh and are lightweight.

#2 Glass - You may not realize it, but glass is excellent for food storage. Many products are toughened so they do not break if dropped.

#3 Stainless Steel - An excellent material for food storage and maintaining freshness