Cut an old flannel shirt, old bath towel, or old cotton sweatshirt into approximately 6-by-6-inch squares, or use a stack of old washcloths.
Place the fabric squares in an airtight container, such as an empty diaper wipes container or plastic food storage container.
Whisk 1/4 cup of natural fabric softener and 3/4 cup of warm water with a fork until it dissolves.
Pour the solution over the fabric squares. Close the container and shake it to coat the squares. Let the solution absorb for at least one hour before using the dryer sheets.
Add one square to each load of laundry in your dryer. Use it for multiple loads until the effectiveness wears off. Soak the squares for additional uses.