Nice finds. The arrow hooks look like they are off the back of a buckle. I'd hunt that spot hard.
Relic nut is on the money! You've also got a rivet from a cartridge box, or cap box, etc., and a very nice flap finial off a percussion cap box or cartridge box! Nice!
I wish that I could dig a fuse like That. VERY NICE!
Your Large lead with copper wire in it "Could" be a melted bullet W/Copper in it
Did you scratch it with a Digging tool? or is that the wire in the Picture?
I'm may have missed something but what is the Piece With the hole in it ; to the right of the Fuse?