I finally made some cheap IEMs. I used disposable earplugs as eardams, oogoo for ear impressions, jelicone as negative mold and locktite general use two part epoxy as positive. The driver came from some 4 dollar earphones from frys. The results are really impressive. I have extra material to...

There is a reusable silicone like material that can help in making diy sugru/oogoo IEMs. I call it jelicone. I made a quick instructions page. Jelicone.homenet.org