I recall many years ago, back in my native Canada, walking past a place and my eye being caught by flower pots on one property that very clearly were engine cylinders.

I caught the attention of the property owner and we chatted a bit about it. it turns out that he was an aviation fanatic and his wife was an avid gardener.

Long story short, they merged their passions and she used his engine cylinders (which came from a variety of WWII radial engines) to hold her flower pots.

At least two of the cylinders came from Bristol Hercules engines, but I don’t recall the sources of the rest. There were eight or ten in all.