Give new purpose to eggshells 

Using water that has been soaked with eggshells in your garden can help strengthen the various plants you’re growing. According to research, the eggshells act as natural calcium carbonate, which lends integrity to the cell walls in plants, providing a sturdier and more resilient structure. Thus, the next time you’re scrambling eggs for breakfast, save the shells and soak in water until needed for watering plants/garden. Another option: Break eggshells into small bits and place them at the base of the plant stems in your garden. Eggshells are compostable so there’s no need to remove them later.