How do you store pennies so they don't oxidize?

To prevent pennies from oxidizing, store them in a cool, dry environment away from moisture and air. Use airtight containers, such as plastic bags or glass jars, lined with non-reactive materials like cloth or acid-free paper to minimize exposure. Additionally, consider using desiccants to absorb any excess humidity. Avoid handling the coins frequently, as oils from your skin can contribute to tarnishing.