The best strategy is to have a wide range of sizes of glass meal prep containers and lighter containers for carrying food on the go. I also love to use a large Mason jar to transport salads and the smaller ones for sauces and dressings. You can even recycle glass jars from jellies, jams, and sauces to use for sauces. These are great to store in the door of the refrigerator, save you some money, and recycling means less waste.