Make a Duck Tape® fabric that is 4 in. long by 4 in. wide.
Place your zipper flat on your crafting board. Add 2 double-sided strips of tape that are 2 in. long on both sides of the zipper. You should have a fabric that is at least 4 in. long by 4 in. wide.
Place your fabric from step 1 and step 2 on top of each other and cut out matching circles.
Attach both of your pieces of fabric together by placing the circles on top of each other and adding small strips of tape around the edges.