Hi Fluid, the pictures you posted above do not show anything conclusive, in my opinion. The most odd ones I've seen so far I've already outlined:
Let's examine your new ones then:
1: The brightness of this "leaf of metal" is the same as some of the other rocks in the pictures. It would be silly to say it is metal at this stage.
2: I see nothing too unusual
3: Is it so shocking, there are holes in the rock? The weird T shape object, is just a standing rock if you look closely.
4: That is quite strange, but I don't think it's impossible for it to be formed naturally. The inside of it, looks like it maybe hollowed out, but I think's its just the black circle at the end of it, that gives that illusion. It probably isn't hollowed out.
5: Really nothing there.