I don't know what it contained, but I once watched a very sad-looking package going round on an airport carousel. It was marked "Fragile" and "This Way Up" - it was upside down and looked as if it had been given a good kicking around the tarmac.

Just after it had disappeared through the curtain, I overheard a voice behind me saying, "Don't worry, dear, it's marked 'Fragile'."