Custom IEMs (Inner Ear Monitors)!

Basically, for around $9, with shipping, I was able to create a set of IEM covers custom-fitted to my ears. (IEM is an inner ear monitor, which goes inside your ear canal. A earbud sits on the outside of that canal.)

They look a little strange, but are incredibly comfortable. I do not feel anything inside my ear canal, and on the outside, only feel a slight drag from the weight of the IEMs themselves. Currently, I'm using JVC FXD80 IEMs, and the custom mold helps accentuate the bass, open up the soundstage, while providing greater isolation than before. This mold is easy to do, and only took me around 30 minutes.