I just did a rear brake refresh on my 2010 Boxster Base. I now have all four old rotors (did the fronts last year) sitting in my garage. They really aren't taking up a lot of room, but I'd still like to get rid of them. There's a lot of iron in these things, so I'm reluctant to just drop them in our recycling can. Does anyone know if any auto parts stores take old rotors and pass them on to the proper recycling?