Each time you crack an egg open, instead of tossing the shell into the trash, drop it into an open container that you keep in the fridge. When the container is full, crush the shells into small bits and sprinkle them around the base of your plants. The sharp eggshells will deter slugs, snails, and other bugs from nibbling on your garden and add a touch of calcium to the soil. - Compost Rules.
This is really cool, my grandpa used to keep them in those white box things...true I don't know much about it because I am deathly afraid of bees and wasps, but I would be willing to have bees if le hubby takes care of them and we have amazing honey! "Mason bee farming"