Eggshells are often tossed away, but they’re surprisingly useful and eco-friendly. In the garden, “crushed eggshells act as a natural fertilizer,” adding calcium that strengthens plants and promotes healthy growth. Their sharp edges also repel slugs and snails, offering an organic and pet-safe pest solution.

Adding eggshells to compost “boosts its nutrient content.” As they break down slowly, they release minerals that enrich the soil over time.

In the kitchen, they have several clever uses. Mixing crushed shells with coffee grounds “reduces bitterness,” while their gritty texture makes them perfect for scrubbing pans or removing mug stains.

Eggshells can even inspire simple DIY projects. They make great seed starters—just “plant the entire shell directly into the soil,” where it decomposes and feeds the growing plant.

Beyond that, powdered shells can sharpen blender blades, be added to homemade toothpaste for extra calcium, or even used in skincare and science experiments.

In short, these humble shells show that “even the simplest waste can have real value.” A small effort to reuse them can cut waste, nourish nature, and make everyday living more sustainable.