Upcycled Soda Bottle Zippered Pencil Case! Make a statement with this fabulous Zippered pencil case... made from recycled soda/water bottles! You will need the bottoms of 2 soda bottles...same size. Cut them at desired height and wash thoroughly. I cut my tall one at 4" and the short is 2 1/4" Best way to do it...cut the bottle way higher than desired height. Once it is cut all around, it's easier to be precise with the measurement. You'll need a colored zipper. Measure the zipper to fit around the circumference of the bottle. Cut off the "stopper" end of the zipper to length. Use hot glue and secure some felt on the end of the zipper. This will keep the zipper from coming off the rails completely, and it helps make the head of the zipper look pretty...you'll see. Using Hot glue, just glue that zipper right around the bottle. Not too close to the zipper track, because the zipper head needs space to wor...