Icons in Bootstrap Toolkit menubar

  Last night I wrote a post asking for advice on getting a graphic icon to display in the Bootstrap Toolkit menubar.
  I got some great advice from Brian Sassaman and Nik Cubrilovic, and it solved the problem, and now I have the feature working. (Modulo problems yet to be discovered.)
  Recall that the goal was to have an icon in the menubar that when clicked would make the menu visible or invisible.
  You can see it in use on my Worknotes site.
  Perhaps this is a feature others want to impmement? Just View Source.
  Also, I'm not the best icon guy or CSS guy, so if you come up with something you think is better, please let me know.