On my balcony, I tried to built a hanging garden wall. I sew new little shopping bags in miniature size, about 10x10x10 cm, on each side, I add something to hang. At the ceiling, I fixed chains and I hung up the little bags with small hooks, you can use paperclips as well.
You can now plant for example different herbs. Each Bag has a little hole at the bottom. When you add water to the plant above, the water runs from plant to plant.