Upper right looks like a buckle without its center bar. Of course finding a horseshoe it supposed to bring you luck, so you will find something good *next* weekend!
Thanks Don I figured that stuff was not CW but the other pictures I posted all came from the same 3/4 acres of feild I grid searched so I wanted to make sure.
Top pic - item second from the left looks like the end of a lock chain - used on wagons and caissons and such. Not sure exactly what they called it. A chain was put through the spokes of a wheel and the end was slipped back through a link. It keeps the horses from running off with the wagon while unattended. Kind of an early type parking brake...
looks like you found a bunch of rusty horse tack. the other finds are cool especially the fired bullits. i always wonder if they can be used in solving a crime.