Put my top down today and this was laying above the hinge above drain holes. I don't know where it came from or if its even acpart of the car 🤔
Seems too lightweight to be a Porsche part.
It looks to me to be one of the plastic nuts that hold the vertical carpet in place. Behind the seats and over the engine cover. You have to remove the top carpet cover first, to see them. My 97 has 4 of them. Porsche PET catalog page 242, item #15, part #999-049-020-40.
I'm about to drive over to the coast just to get a smog check and register my boxster. I could do all of that locally... But this seems like a great excuse to drive. Should be mid 60s today.