That looks like the inner coil of an old spark plug wire. Anyway, that isn't anything that's supposed to be in there. The old pcv screen at the back of the intake used to have a coil of metal like that stuffed in it. It was inside the screen and metal body of the PCV screen.
That thing in your hand looks to straight to be from the pcv thing now that I look at it. Doesn't go to anything inside the engine for sure.