What happens to old Knit Graffiti

That presumes the knitting stays up long enough to get old :) My camo barbies in graffiti alley Ann Arbor seem popular and are taken pretty quickly. However in Yellow Springs Ohio the knit graffit stays up until they are on their last threads. Then we take them down and recycle if we can. Some pieces end up on other poles, some used in projects like the traveling storybox, or the watering can