Leftover Magic Frugal Soup

At the end of your meal, put that last spoonful of peas, meatloaf, carrots, etc., into a container that you store in your freezer. When it's full, put it in the slow cooker, taste when hot, and season accordingly. You'll never go wrong, as the flavors meld beautifully.

There's no reason to throw out food, even if it's only a spoonful. This soup is basically free because you already figured the cost of ingredients in the original meals you prepared.