Homemade microwaveable heating pads are made from corn, rice or buckwheat hull. To make one you just need to construct a small sack from fabric and stuff it with the filler of your choice. Corn is ideally suited to fill a body warmer because it does not smell bad when you heat it and it is resistant to developing mold. After you make one heat it up in your microwave when you want to warm up on a cold winter night, or relax and heal sore muscles.
Fold a piece of 9 by 22 inch fabric in half with the right sides facing each other. This is the inner pocket of your bodywarmer the new dimensions are 9 by 11 inches.
Sew three sides of your bag shut using a sewing machine, or by hand with a needle and thread. Sew the fourth side, but leave a small opening so you can turn the bag right side out.
Turn the bag right-side out by pulling the inside through the opening. Fill it with 2 lbs. of extra clean feed corn. Stitch the fourth side of the bag closed by hand using a sewing needle and thread.
Sterilize the corn inside the bag by placing it on a paper towel and microwaving it on high for two minutes. Allow it to cool for two hours and microwave it again for another two minutes. Keep heating and cooling it until the paper towel is dry after you microwave it.
Put the dry corn bag into a plastic freezer bag. Squeeze to remove excess air and seal closed. This helps keep your corn bag clean and dry during use.
Fold a piece of fabric 10 by 24 inches in half with the right sides facing each other. The new dimensions are 10 by 12 inches. Sew three sides closed; do not sew the fourth side. Use any fabric you like for the cover; decorative fabrics along with plush fabrics such as flannel and fleece work well.
Fold under the raw edge for the fourth side and sew it down so the raw edge is gone to create a cover or pillowcase for your homemade body warmer. Do not sew the fourth side closed.
Place your plastic bag with the bag of corn in it inside the decorative cover. Heat for one to two minutes on high in the microwave. Do not overheat your bag or leave it unattended while heating because it is flammable.
• Place the bag in the freezer for use as a cold compress.
• Instead of corn, use buckwheat hulls or rice kernels.