Bricks, railway sleepers and rocks, these are too ordinary materials that we can find on a garden bed border easily. But why not boost your imagination? Use recycled glass bottles,shipping pallets, clam shells and even logs to change the boring borders.
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.