Ooh, more sweet ideas! Thanks, all, for keeping them coming.
Because my role at this meeting was community liaison (helper-person) it felt more important to appear approachable than authoritative. I know my outfit skewed casual. Hopefully it wasn't too.
Years ago when I worked in an an office I'd have had more choices. These days my wardrobe and work are super casual (Not a blazer in sight). The meeting on Monday was for volunteer work. I'd have liked to have felt a teensy more dressed.
Other occasions I struggle to dress for are civic meetings, funerals, etc, things that happen occasionally where professional clothes are appropriate.