All you need is a small amount of vertical space around a balcony or an open window which can hang or store a vertical array of drink bottles that can grow all your herbs and lettuce easily. Recycle as many of your plastic drink containers.
What a clever and easy idea. Mom's gone now and it would be a fun way to share her favorite Rose bushes with my Sibs. Grow Beautiful Rose Bushes from Trimmings with the Help of Potatoes (from Insanely Clever Gardening Tips Ideas")
keep shells in open container in fridge. When full, crush shells into small bits and sprinkle around base of plants. Sharp eggshells will deter slugs, snails, and other bugs from nibbling on garden and add touch of calcium to soil.