Sorry, I'm of no help to you. I'm just learning myself.
However, the photo of the item in your palm, I'd guess to be a hammer minus the claw on the back.
Daddy used to pick up good hammers out junking and then would whittle a handle for them and attach them.
Honestly, the even weight of an old hammer can't be beat.
Out of looking at everything you found, that's the only item I think I might could help you with- and, I'm not exactly sure on it.
I know there must be those on the forum which are very knowledgeable about such things and can tell you much, much more.
Great finds-