Use a blanket at home as a throw to cover a non-matching chair, or to cover the mess your kids have made. Many drivers keep a few blankets in their cars. A blanket could save your life if you break down in winter, and even in spring and fall, you will get pretty cold inside an unheated car at night. Modern blankets are often made of polyester so they are warm, easily washed, and pack away into very small bags.