Don't throw away your eggshells, it can be used for other things as well at home. From facial scrubs to getting rid of bugs, here are some unusual uses of eggshells
 

House cleanser: Add some soapy water with ground eggshells and place it at spots that are tough to get rid off, and watch them sparkle and shine.
 

Improve coffee: Mix some crushed eggshells into ground coffee, to ease the bitter taste, before brewing.

Facial scrub: Add some egg whites to your ground eggshells. Apply to your face and rinse off once it dries off.

Garden fertilizer:  Broken eggshells are a great fertilizer. In addition, they get rid of bugs that destroy your plants.
 

Skin irritation:  Pour eggshells into a container of apple cider vinegar and apply it to your irritated skin.