If the toilet isn't damaged, use a bucket of water to make it flush. If it is damaged, put a large plastic bag in the toilet. Wear extra layers of clothes and use several layers of blankets. Don't get wet if you can't get dry. Be sure to eat.
Food provides calories that help maintain body heat.
Heat only the area of your home that you are using. Close doors or drape a blanket over the entrance to unused areas. Cover windows and doors with blankets. Close curtains, shades or drapes. Use foods that can spoil rapidly first.