Assemble the needed items. Find a can (such as a Coca-Cola can) and, of course, your MP3 player––keep the earphones plugged in. Rinse out the can and allow it to dry before use, as you don't want sticky earphones. You'll also need something to pierce the can base with, such as a nail. If you don't have access to a nail, find something else that is sharp enough such as a nail file or a very strong pen. Pierce several holes in the bottom of the can with the nail. Make the holes mostly near the center of the can's base. Use a hammer to help make them if you don't have the strength to pierce the can. Feed the earphones in through the top of the can. Feed them through the hole where you drink from. If you want, they can be taped in place to prevent them from moving about but this is probably only needed if you're moving, such as in a bike pannier or in the car, or if the can is in an awkward position. See how the earphones sit before taping. Turn on the MP3 player at the other end of the earphones. Turn up the volume until it is loud enough to hear. It may take some volume adjusting to hear the sound well enough, but once you have the volume accurate, the sound should be clearly

audible.