This garden planter box can easily be altered to fit various shapes and sizes, like squares or shorter rectangles to fit your space. In this example they used teak lumber, which drastically increased the cost, but you can easily work with salvage or a less expensive wood option.
I wish I had tons and tons of house plants in my house, especially when I see things like this!
I have an old mail sorter n black like the one on the right. Would be super cute to plant herbs in!