[cocokessler]

My dog ate my custom in-ear monitors. Well, he chewed up one of the silicon molded ear inserts. The drivers still work quite well. I was hoping to repair them, if I could do so affordably. 
 
Is there a good kit available for making your own silicon inserts?
 
(I have read a little about the blu-tack method, and I am interested in learning about other options.)