Half wine barrels are easily come by in California, $20-$30 at local hardware stores. We started with one herb barrel years back, we now grow three barrels of assorted herbs, two of parsley, one of mint (for mohitos), and seasonally three of young Genovese basil for pesto. Not to mention all the flower barrels; if a neighbor hit a home run over our fence, it would probably land in a barrel.
It's nice being able to rotate barrels, planting fresh every now and then, and ripping out the old once the new is producing enough for use.
I wish someone had told me years ago how easy parsley is to grow. I always imagined it would bolt right away, and I'd use too much. Parsley grows beautifully, and it's hard to keep up with it. One of my inane judgments in my youth was that those who knew realized tabouleh was mostly parsley; the mostly bulghur version was counterfeit. We may have to dig out a tabouleh recipe to keep up.
Per la strada incontro un passero che disse "Fratello cane, perche sei cosi triste?"
Ripose il cane: "Ho fame e non ho nulla da mangiare."