I read a while back that baking soda and white vinegar are great for cleaning. I've been using that combo ever since, or even individually. Quick, sparking results! Incredibly cheap! Great for bathtubs, kitchen sinks, stove tops, etc. I haven't bought a commercial cleaner in years for those jobs. And of course I assume it's also good for the environment.
What food ingredients do you use for cleaning, whether household, clothing, cars, or other?