I've never run a clinic, and have only sat through part of one. My normal 1 on 1 program would probably be a mess with multiple students, at differing skill levels, so I wouldn't mind some input. A "wish list" type thing...
I'm not sure what people would be interested in, but a few things you may want to consider:
1. Taxi & Takeoff (how to avoid the ground loop)
2. Fuel loads/draining wing tanks/possibility to leave some in right wing/Differences between models
3. TC's combat trim tip
4. Tail slides (show how slow you can get the thing going "UP")
5. Different flap settings
6. How to use the rudder while not much else is responding
7. Putting the stall in stall fighting (or going with the "float")
8. Landing (both cv and af)
9. Sparring (Mtnman v. TC, anyone?)
I'd like to tag along for this clinic, if I may. I'm sure I could learn a few things and might be able to help demonstrate a few things as well, if you'd like.