There's lots more on this site, including a library of outreach activities and resources used by people in the department! You just need to register for an account (or log in) in order to see it.
Subscribe to the Astronomy Outreach Calendar
You can use the following link to subscribe to astronomy outreach events and volunteer opportunities in your favorite calendar program or website (e.g., Google Calendar). You may need to copy and paste this link into your calendar program:
http://www.astro.cornell.edu/outreach/internal/events/calendar/all/all/all/ical
Once you do this, you'll stay automatically up to date on upcoming astronomy outreach events in the department!