You already know that chicken bones make great stock but who has time to do this for a few ounces of stock? Start a "stockpot" in your freezer. Place deli roasted chicken carcasses in a heavy duty gallon freezer bag and store in the freezer. When the bag is filled, its time to make at least a quart of stock.
Add some seasoning, 5 cups of water and the bones to a big pot. If you like, add a carrot, onions, and celery. Simmer 30-60 minutes, strain through a colander. Really great stock is ready to use or to freeze for later.