It is a really nice idea for a post. Many times, a quick and simple is just what I need.Hi @colleenthurber.
For a stretchy bind-off I usualy use the Jeny's super stretchy bind-off published in Knitty magazine:
or just go up a couple of needle sizes.
http://knitty.com/ISSUEfall09/FEATjssbo.php
Thanks @mariamelga! That bind-off looks like just the trick