Center for Engaged Teaching and Learning

Equity Unbound has a site dedicated to Community Building Ideas. 

From the site:

"Each of these resources includes a video either demonstrating or describing the activity or exercise for community-building. We also include descriptive text, slides you can reuse/adapt where relevant, and links to additional resources. We also show you how much time, what kind of resources you need, and different variations on the activity to help you adapt it for your purposes."