Found these in an old park. One is a weird sort of clip and the other I hesitantly say is a percussion cap. It is two pieces, a circular top and a bottom with multiple pieces coming off. What are they?
No idea on the clip but the 2nd object is a jacket from a modern bullet...guessing at caliber I would say .40 S&W but it could be a .45acp. Definitely a pistol caliber.
Im with leatherneck, first object no idea and the other photos are in fact fired Hollow point bullets from a pistol... Looking at the first one again the only thing that I can think of is a broken suspender clip or broken old belt clip.
First object looks like part of an old shaving safety razor. Unless you have very large hands I can't see the second pic being a modern 45 or 40 round or casing. Looks too small in my opinion. Something like a coin for size comparison would help.
Agree on the copper bullet jacket. Possible suspender clip on the other. Here is a photo of various vintage suspender clips. The one at the bottom right looks close to your find.