In-ear monitors are great, until the rubber sleeves stop being comfortable. Here’s a quick and cheap way to make disposable ones using foam ear plugs so you can stay comfortable while listening.

Disclaimer: This project uses sharp tools and involves sticking things into your ears so be careful, and be smart! We’re not responsible for any mishaps!

This requires that you have earbuds that have a stem on them, like my Shure E3Gs below.

The foam plugs will block outside noise, but we need to make a hole for the sound to come through and so they fit onto the earphones. You can use a pen tip that’s slightly sharpened, a rotary tool with a small bore tip, or anything of that nature.

Here’s a size comparison of the tools. Basically, you want to make a hole that is smaller than the stems on your earphones. That way, they’ll be snug and won’t come off in your ear. Let’s start by taking an ear plug and flattening it.

You can cut it to an appropriate length for your ears with the scissors. My ears aren’t very big, so I just cut them in half.

Wait for them to puff up back to their normal size and then flatten them the other way, so they’re a round dot.

Next, take your hole-making instrument and put it to work. I used a sharpened pen tip and punched it.

You could also use a hobby knife and make a small square instead of punching a hole as well. Here’s what the finished product looks like.

I went back and punched holes in the other halves of the ear plugs so they wouldn’t go to waste.

You should be able to just slip them onto your earphones, albeit with a little effort.