Hot bag
There are other ways to generate heat besides electricity, gas, and fire. If you want convenient way to stay warm in the winter, you need to try this hack. You just need to be careful and pay attention.
We will generate heat through an exothermic chemical reaction; it sounds complicated, but it’s not. You need two ingredients: water and calcium chloride. Step 1: Place the water and the chloride in two different-sized plastic bags. Step 2: Place the small bag inside the bigger one. That’s it! Use this heat pack to warm your pillow, hands, or feet.