iPhone earbuds don't fit, don't stay in? Try this...

[frikfrak]

I've purchased several of these for myself and for friends. You mold them yourself, and they also have a custom option where they mold them. They also block external noise. They have several colors.

http://www.podfitkit.com

 

[frikfrak]

These might also do the trick:

http://catalog.belkin.com/IWCatProductPage.process?Product_Id=263603

 

[cyclingplatypus]

I use JABRA EarGels tight fit on the earbuds and they do the job and give you a pseudo custom fit.