TerraCycle collecting items at Office Depot and Old Navy. If you are doing some spring cleaning, don’t toss those old flip flops or used pens into the trash can—they can be recycled by TerraCycle and kept out of the community landfills. According to a TerraCycle press release, shoppers still have time Saturday (April 23) to bring 10 used pens, markers or mechanical pencils to Office Depot at 569 Ritchie Highway and receive a coupon towards new Sanford products (maker of Sharpie, Expo, PaperMate). Next door at Old Navy in Severna Park, shoppers can deposit their used flip flops into collection bins inside the Old Navy store through May 21.