On page 2 post #25 in the 2nd pic at the bottom left looks like it could be an arrowhead although it kind of looks like one of those fake ones from Ka Do Ha Indian Village that you can buy.
The bad news is if it is actually real... It is illegal in the State of Arkansas to keep arrowheads or any other Native American artifacts. You can be prosecuted and go to jail for it.
The 2, circular objects with the holes in them look like bones from a round steak.