The Indian was a 1864, and the shotgun shell was a 8 gauge which is pretty rare . Is the round gray object a Rosette? If anyone knows what some of the other brass objects are let me know. The odd shaped thing is a horse or cow tooth that washed up
There is part of a harmonica reed, rectangular with slots that increase in size... probably corroded copper (top of the pic with the button in it). I see a crotal bell, also known as a rumble bell, used on horse drawn wagon, prior to automobiles. Nice old finds, good show!