I found this neat kit at the nursery. It has a pole and two cross pieces. The cross pieces go in to the bottom, big pot at the bottom and top, then the pole is threaded through the holes in the middle of the pieces. Then you take four smaller pots and thread them on the pole, flipping them back and forth as you do. Fill with soil and add plants! This makes a great herb garden for me!
From the top down: Rosemary, Mint, Oregano, Thyme, and in the bottom pot: French Tarragon, Basil, and Italian Parsley around the back.