For neck pain, fatigue or the stress of your day, make a homemade heat pack for your neck. Using a long sock, fill it with inexpensive rice and tie the end. Put it in the microwave with a cup of water for a few minutes. Check the temperature, then place it around your neck (over your shirt, so you don't burn yourself) for a few minutes. Relax and enjoy! The heat pack will hold heat for up to an hour, it's very flexible and you can reuse it whenever you want. You can even cover the outside of it by sewing a sleeve from your favorite material, if you wish.