YAKIMA, Wash. -- Old Navy has teamed up with TerraCycle to collect used flip-flops during Earth Month. Shoppers are asked to bring old flip-flops to Old Navy, 1716 E. Washington Ave. in Union Gap through May 21. TerraCycle will recycle the flip-flops into playgrounds which will be donated to communities around the country. Schools and community groups can also get involved in TerraCycle’s free, ongoing upcycling fundraisers.