There are a few sustainable packaging materials that can be used for meat in the freezer. One option is biodegradable plastics, which are made of natural materials like corn or potato starch. These plastics will break down in a landfill and won’t release harmful toxins into the environment. Another sustainable option is paper packaging. Paper is a renewable resource and can be recycled multiple times. It’s also compostable, so it can be broken down in a landfill and used to create new soil products.