Start your rice bag or corn bag DIY by collecting all your goods. You need flannel fabric, not fleece. You can use any type of flannel you want. You can create the heat package of any size you want, but generally you need less than a quarter of fabric. You also need a filler. For fillings you can use plain white rice or whole fodder corn. You also need thread and fabric scissors as well as a sewing machine. You can technically make these bags by hand, but the process will take considerably longer.
Pro tip: If you are planning a budget, a good way to buy cheap material is to look at Walmart, JoAnn or Hobby Lobby for fabric cuts called fat blocks. These quarterly yard cuts of fabric are usually discounted to just a few dollars. You can also use standard craft scissors instead of sewing scissors if you are trying to save some money. Just make sure you pull your fabric nicely and learned when cutting.
Rice against corn
When you choose your filling you can pick between rice and whole fodder maize. Rice is cheaper and easy to buy in a local grocery store. Rice has a subtle scent and if you want to add essential oils to the bag, the rice is very nice. Whole feed corn can be purchased at agricultural and country stores.
Often you have to buy it in bulk. It should give you about fifteen dollars for forty or fifty pounds. This makes corn a good choice if you want to make several bags. Corn tends to keep the heat a little longer and spread it a little more evenly. However, corn has a stronger scent, and although subtle, it is not a scent that everyone likes.
How to make a DIY heat pack
Step 1 – Iro
Start by ironing your fabric. With all sewing projects you help iron your fabric to sew straight and drastically improve the look of the fabric overall. Once you've ironed out, decide what shape you want your final product to be. Think about how you will use it. Small rectangles and squares are popular shapes for these flannel heating packages. Long skinny rectangles are excellent for using the heat pack for headaches and long, thicker rectangles are good for back pain or cramps. Your shape should be determined with use.
Step 2 – Cut out
Once you have decided on the shape, fold the fabric in half and cut the shape you want the final product to be . Use a tape measure to make sure everything is fine and even. When cutting your fabric, make sure it is folded so that there are only three sides you need to sew down.