The others have given some good ideas. One other thing is look to tap into the knowledge of your local fly shop and see if they would be willing to give a presentation on the local waters, hatch charts or maybe a beginners fly casting clinic. We have a member "fishingfly" (Corbin Hart) that started a fly fishing club at Auburn University, see the thread below, but I would recommend getting in touch with him, send a PM or through their FB page. You might also do the same with your local TU chapter and ask them to do a presentation on past and present stream restoration projects that they have been involved in. You might also tap into some of the local fly fishing guides in your area to see if they would be willing to give a presentation on the waters that they fish. Best of luck!