Step 3: Eggstraordinary for Plants
Eggshells contain a high amount of calcium, which plants love. Let your hard-boiled-egg water cool, and use it to water your plants. They'll thank you for it - especially your solanaceous garden plants (tomatoes, eggplants, peppers, etc.).
If you've broken a few eggs to make your french toast, be sure to compost those shells! Or, if you have a particularly straight break, consider saving the shells for seed starters. Rinse the shell halves out with warm water to remove the membrane. Poke a small hole in the bottom with a pin to allow for draining, and fill the shell with soil. Press in your seeds, which will draw in extra nutrients from the shells and grow up nice and tall!