One of hobbies earlier in my life was (and remains so, although I have no time for it) historical archaeology, especially that related to the Revolutionary War and Civil War periods. I once located a long-forgotten steamboat in the old bed of the Mississippi, even enlisting the help of a professional marine archaeologist from Louisiana with an underwater magnetometer. Unfortunately she lies in federally-protected wetlands and nothing beyond locating it could be accomplished. It remains where it came to rest, beneath 40 plus feet of muck and water. I also have assisted archaeologists with historical research backing up their field work, most notably at old Fort Pickering in Memphis. So, in looking for something else, I ran across "bellarmines," also known in some contexts as "witch bottles," and I found this fascinating:
An American Witch Bottle.