Use a strong garden stake, or a piece of rebar from your home and garden store. Get several clay pots (with single drainage hole at bottom). Slide the biggest pot onto stake, tilt until the side touches the stake. Repeat tilting opposite way every other pot.
Simple and inexpensive way to grow herbs or in my case succulents. If you are a crafty person you can mosiac the concrete by using dollar tree gems and stones and applying epoxy. Allow drying time then plant your heart away.