If you like plants, instead of cluttering your windowsills with pots, install a vertical garden. Lush vertical landscapes grow healthy plants using less real estate. You can also find small hydroponic setups that stack for a wall-mounted column of green -- complete with edible herbs and vegetables ready to use in a side salad or stir-fry. If you don't want to invest in trellises or an expensive hydroponic setup, you can train vines like ivy or pothos (Epipremnum aureum) along hooks tacked to a wall, or grow them in hanging baskets. Houseplants create designer ambience at bargain basement prices. They also help filter the impurities out of indoor air, which makes them a practical as well as an attractive choice. Out on a small patio or deck, a vertical vegetable garden can produce impressive yields in a tiny space with very little work on your part.