It is fun to spend a few hours on small projects that yield immediate results.
I use Tomboy for essay writing, I often need to know how much I have already put down, so I will typically paste the note into a terminal and run wc on it, or I will paste it in to gedit and use Tools->Document Statistics. So here is a new extension called ‘Note Statistics’ and it looks eerily like the gedit tool. Below is a screenshot, screen cast, and git clone URL in that order.
git clone git://github.com/eeejay/tomboy-notestats.git
Browse source on github