The first attempt was made using copper tape on paper in a mountain-ish design.  This one didn’t end up working.  I’m guessing this was caused by too many separate strips of copper tape.  The second attempt, made with Xiaoqi was made of paper with strips cut either side (not pictured).  In each of these cuts, conductive thread was wrapped around.  This created a very subtle sound, yet was much easier to create than the copper tape speaker.  The final one I made was created using a small bag in which the magnets were placed, with conductive thread wrapped generously around it.  This one worked the best, which is funny, because I didn’t realize I was using an anti-static bag.  It would seem as though static electricity and electromagnetic forces might not interfere too much.