Foil containers are also relatively safer. 2) The next best options are plastic containers that are recyclable and marked with the number 2 or the number 5. These plastics are safer and are usually recyclable in most places. 3) Styrofoam is bad. Try to stay away. It leaves yucky chemicals in your food and is horrible for the environment. 4) Those brown cardboard-y bowls that look natural like they should be better for you, but aren't. They basically all have PFAS (like Teflon) chemicals in them. Don't forget to take a picture of your plastic free lunch #BHchallenge .