Earbud Holder with keyring tab
by NumberSix, published
I've added a keyring tab to the design, and altered the derived cover (http://www.thingiverse.com/thing:38292) so it closes around the tab. I've also included the a Sketchup file, so you can alter further if desired.
Slice and print.
Carefully click the covers on. See this pict from the original Thing for best approach to fitting the covers: http://www.thingiverse.com/image:204649