Take your 12x20 inch piece of fabric and fold it into a long rectangle with right sides together.

You should now have a 6x20 inch rectangle.

Sew fabric down the three open sides but stop so that you have a 1-2 inch opening. You will need this opening to turn your fabric right side out and to fill the bag with rice.

Turn fabric right side out.

In a bowl, combine, rice, dried lavender, and lavender essential oil (if using). Mix well. The essential oil is optional but it definitely increases the lavender scent.

Place funnel into the bag opening and begin to fill the bag with your lavender rice. The 6 cups of rice should get the bag half full which is just the amount you want.

Remove funnel. Fold the raw edges of the opening so that it matches the sewn edge. Sew the opening shut. Sewing by hand is preferred so that you cannot see the seams but if you don’t mind seeing a couple inches of seams then go ahead and use your sewing machine.

You now have a DIY heating pad!