Ziploc bags and plastic wrap are convenient for freezing food, but they can leach chemicals, often end up as waste and there are alternatives that are better for both your family and the environment.
Wide-mouth glass jars are great and adding a 1/2 inch of water to freeze at the top can further protect your food from freezer air.
Metal containers work well with the added benefit of thawing quickly a dish of hot water. Aluminum foil also works well if you are careful to avoid holes.
Butcher paper is a decent alternative for shorter periods of time if you make sure to adequately wrap your food. Waxed cartons also work well, especially for soups and stocks, allowing for expansion.
Many fruits don’t even need to be packaged in the freezer and their skins come off easily when thawed.