I have been saving eggshells for many years now. It started out with chickens. I had a bunch of them and all the shells. I couldn’t see throwing them away so I re-purposed them. So after I used the eggs, I tossed them into a pan.
Let your grandchildren collect the eggs.
Once the pan was full, I baked them in the oven for 20 minutes at about 250-275 degrees. Then I stored them in a plastic bag on top of my fridge for future use.
I used them for feeding back to the chickens. I had a separate feeder for them. Whenever the chickens wanted the ground up shells they were there for supplement.
I also used them in my garden and would put some in the planting holes, especially for the tomatoes.
I fed them to the wild birds, mainly the shallows. I would toss them out on the road behind my place and the shallows loved them.
I’ve found several other ways to use eggshells of the internet although I have never tried any of these.
Reader’s Digest suggests:
Sweeten your coffee
Add some crushed eggshells to ground coffee before brewing it to make it taste less bitter. When you’re done, toss the grounds and shells on your compost heap!
Scare away slugs
Crush eggshells and scatter them around your vegetables and flowers to fend off hungry herbivores, such as slugs, snails, and cutworms without using toxic pesticides. The smell of eggs will also deter deer.
Unclog your drains
Keep a few ground eggshells in your kitchen sink strainer. They trap additional solids and when they slowly break down, they will help to naturally clean your pipes on their way out.
The Prairie Homesteader says:
Laundry Whitener: To help your whites not to turn grey, put a handful of clean, broken eggshells and 2 slices of lemon in a little cheesecloth bag with your clothes in the washer. It will prevent the soap deposit that turns the white clothes grey.
Sidewalk chalk: 5-8 eggshells (finely ground), 1 tsp hot water, 1 tsp flour, food coloring optional…mix and pack into toilet tissue rolls and let dry.
Grow your seedlings
Did you know that you can also use the eggshells to grow your seedlings? Not only do the shells serve as a great natural “pot”, but they also gradually release calcium and other nutrients that will help the seedlings thrive. Make sure to make a small hole at the bottom of the shell for the water to drain, fill the shell with some dirt and place the seeds. Once the seedlings are ready to be transferred to the ground, crush the eggshell and place it in the ground. It’s a win-win!
Eco-friendly Household Abrasive
Shake crushed eggshells and a little soapy water to scour hard-to-clean items like thermoses and vases. Crushed eggshells can also be used as a nontoxic abrasive on pots and pans.
So there are ten ways shown here for eggshell uses. Get started saving your shells! Even is you start now you can use them in a couple of pots or for a couple of plants in the garden. It’s never too late to start.