Clean the pipes – Sprinkle some crushed egg shells into your sink strainer. They will help to trap bits of food and keep your pipes nice and clear. If you’re looking for a natural way to keep your whites white, then put a few clean, dry shells with some lemon into a small, closed muslin bag and chuck it in with your wash. If you’ve run out of steel wool, then grab a handful of broken eggshells to help scrub pots and pans. It’s an amazing abrasive, so mix it with soapy water for a great clean.