CARBONDALE - Going green can be as easy as slipping off an old pair of flip flops and popping them into a collection bin. Thanks to a promotion by TerraCycle, an international upcycling and recycling company, and clothing giant Old Navy, used flip flops can be recycled and turned into playground equipment. The promotion is an example of upcycling, or converting previously hard-to-recycle materials into new materials or products. The nationwide program began Friday and will continue through May 21 at any Old Navy store, including the Carbondale location. Old Navy shoppers can deposit their used flip flops in colorful collection bins found inside the stores. TerraCycle will then recycle the flip-flops into playgrounds, which will be donated to communities around the country. By bringing in these hard-to-recycle products to their local stores, consumers help keep waste out of their community landfills, according to a TerraCycle release.