Training Exercises

To the community at large: I am working to educate my self-service users. I have been using biweekly sharing sessions with a show-and-tell approach. I ask for specific problems from my community and we use the time to show how to solve their needs. 

My problem is that the knowledge transfer is not sticking since one person's problem is only interesting to that person rather than the whole group. 

So, I am looking for simple "homework" types of exercises.  Has anyone done this? If so, what kind of exercises did you provide? 

Thanks in advance for any help!