Double spiral garden for herbs. Space saving, beautiful raised beds using no dirt, just sands and composting materials to create new soils. Check craigslist and freecycle.org groups nearby for free used bricks or stones to build it.
Not all of us have the skills to build a raised garden bed out of wood, and that’s when cinder blocks come to the rescue. I love how they have all the holes so you can easily separate your herbs. For a smaller space, you could even take out 2 or more of the block to create a narrower bed. After you’ve got a level place to start your garden, the rest is pretty simple!