From a very young age, I remember my mother always making homemade heating pads. She sews fabric like you would for a pillow, leaving a small hole on one corner. Then you put a funnel in the hole and put cow feed into it and sew up the hole. These can be thrown in the microwave and make AMAZING heating pads! They can also be put in the freezer, which is great too. I use them whenever I have aches and pains. Typically I keep one in the freezer and have one that I can throw in the microwave whenever I need it. They're super cheap to make too, especially if you buy scraps at a craft store. And they also make amazing gifts!