I use thistle seed in mine. I make a sleeve of flannel and fill it half full, and sew the end up. Then I make a case to put on it so I can wash it as often as needed. I put mine in the microwave for 2 minutes, turn over and do it for another 2 minutes. I have RA and have used it for years. I mostly use it on my neck and hands. Never thought about making one from a glove pattern. I just might do this next! The commercial ones are filled with flax seed. I have one of those as well and use their heating instructions. Jan