Flip those flops into something new. TerraCycle Canada, which creates solutions for hard-to-recycle waste, and retailer Old Navy have partnered to create a national waste collection program for used flip-flops, the Regina Post-Leader in Saskatchewan reported. TerraCycle created the free Flip-Flop Brigade, which allows consumers to send their old flip-flops to TerraCycle and receive a coupon in return. The sandals will be recycled into products such as playgrounds, park benches and bike racks, the newspaper said.