In this day and age, presentations are everywhere thanks to modern technology. There’s a good chance that not only do your students have something to say about them, but they may have to give some at their job. Questions you could give them are:
What makes a good presentation?
What makes a bad presentation?
Do you have to give any presentations at work? If so, what are they about?
How do you feel about giving presentations?
How do you feel about watching presentations?