Keep shells in an open container 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 egg shells will deter slugs, snails, and other bugs from nibbling on your garden.
Template design of the tabletop mosaic, a full size drawing. The artist used the original plate glass tabletop as her mosaic substrate. It was placed on top of her template to give her a pattern for her glass on glass mosaic.