Recently when I started a new site I was prompted to add some icebreaker topics! With some preseeded topics that I could just choose and post. That was awesome. Now the site is up already and I don’t know how to find my way back to there! 
And I found this older topic searching for a way, and am thinking there is a goldmine here of more ideas for icebreaker topics that site admins might enjoy being made aware of as they start up their communities.