I bought these:
Porsche Boxster Front Bumper Mesh Grill Kit 986 | eBay
But really, you can make them yourself with some gutter guard. I think they look great though and really cuts down on the debris!
I also have these if you are interested. I bought them on eBay and thought I could match the mesh for my center radiator but gave up looking when I saw the others. PM me if you are interested.
