Spreading the Word - You know about the wiki and the mailing lists. What other tools are getting the conversation going? Have you tried using Slack or Trello yet? Are you interested in using Meetup or Facebook to promote events? What are some of the advantages and traps of social media tools? How can we ensure they are open, inviting and secure?
More Resources - Someone's already done the dirty work. The OWASP wiki is filled with ideas for your chapter. We'll start with an overview of what is already available on your chapter page, then see what others have done with theirs. We'll also uncover tons of videos, games and activities. Have you tried Cornucopia? CTF? Screened an AppSec presentation or 24/7 Podcast? Let's see what we can find.