For those of you trying to beat cold in snow, here’s how to make re-usable hand-warming heat gloves using rice as inserts that can be heated via microwave. I can tell you from growing up in the snow in Korea during winters that hand-warming heat gloves can come in super handy on those short trips outside the house.
Place the gloves in your microwave and heat for a few seconds. Microwaves vary, so experiment with yours to see what amount of time and what power level work best. The gloves should feel warm but not hot to the touch. When you have your hands in them, the heat will be trapped against your palms and feel quite a bit warmer, so heat your gloves a little less than you think you need to.