Finally I lost the metal part of my Lavalier clip, so I modeled another one that is fully printed.

Print, put your lavalier in it... and use it. Maybe make it in ten colors to contrast or match your subject matter? Pictured here mounted on an Audio Technica Lavalier mic and the cord is wrapped on Joe Chung's Larger Headphone cord winder http://www.thingiverse.com/thing:18561