Buy Earphones That Are The Proper Size
Earbud Replacement To Foam Earplugs
It can be hard to make an earphone stay in the ear. Lifehacker posted a hack where they used twist ties to make a holder for earphone to keep them in the ear. I tried it, and it didn’t work, to say the least. Not only did it not work and my earphones kept dislodging while running (contrary to what they said), the twist ties made the back of my ear sore with the constant pricking. Wearing a pair of glasses isn’t very comfortable with this arrangement either.
You trim your foam earplugs to the size you want (keep it a little longer than the length of the shaft that bears the actual speaker apparatus). Then, you flatten it into a circle shape (squish the dome to the base). Next, you need something round, narrow and sharp, like the end of a mechanical pencil, or (if you can manage it) a punch machine. Make sure it is sharp because you want to make it precise. Dig through the centre to make a round cavity, and let the foam earplug expand back into shape. You will get a cylindrical cavity. Just put this around your earphones’ speaker shafts and you’re done!