Food tips
Buy Local Food : Strawberries, blueberries and many other kinds of fruit often are available from farms that allow you to do the harvesting (or not, if you prefer to pay for the cost of picking). Many fruits are easy to freeze, and apples will keep all winter in a cool corner of the garage.
Oven Tips : Cook with the oven door closed. A partially open door wastes energy, costs you money, and warms you instead of the food.