Allow teachers to "window shop" for activities and quizzes in courses without disturbing each other's classes. We created a new role with just the right permissions to allow you to look at stuff and then import it into your own course.
I did a write up about how to download our Role Preset, set up the new role, and have teachers add each other to their courses to share. Attached is the "Collaboration Share" Preset role we created. You can import all our settings and make your own role to allow teachers to share content.