I don't have the pictures anymore sadly, but I used to know a guy who found an old sword. It looked pretty ornate and slender, so I think it was a discarded naval officer sword. And by old, it wasn't rusted, just worn looking so couldn't have been older than 20th century. But that's just my guess.

As for me, I've thought about buying Russian/Soviet/Warsaw Pact bayonets. They look cool, though I tend to like the more recent iterations used by the Russian Army now if for nothing else than how clean and modern they look.