Uh, meetings. Most of the meetings I go to (church board, watershed council and local small woodland owners' board of directors) are in locations that make bicycling those days not worth it to me or are at times that I can't make it there in time, without driving.
The president of our woodlands chapter is an avid bicyclist though. He invented this:
About Havel Designs
It would block my headlight, though.