Start by drawing out a pattern on to cardboard. Simply draw around the iPod shuffle, making sure to draw each of the sides that go together in one big template. Leave a rectangle at the top for the flap. If anyone has any problems I can put up my template.
Cut out the template and score along the edges. Fold the template in to the iPod shuffle shape, making sure that the iPod will fit nice and snug.
Now the fun part, pick a bubble gum wrapper that you like. I needed to use two gum packet wrappers, but I'm sure you can get bigger ones. Glue the wrapper to your cardboard template.
Cut off all the excess wrapper and make sure it's all neat. Fold it back up and glue the ends together (I found it best to use super glue). Use a small piece of Velcro or a popper to lock down the flap.