One thing our company has done a few times is to have the speaker reach for an item by their computer, on the surface they’re using (table, desk, etc.) and ask people, without getting up, if they have that item within reach.
Example: speaker shows flower or plant. “How many people have a flower or plant within reach? If you don’t have one, turn your cam off.”
Fifteen people out of a hundred.
Move on to the next question. Or you can do one where you gradually reduce the number of people. For example:
“How many people have been to more than one state? Leave your cams on.”
[80/100]
Now, how many have been to more than five states? Turn off your cams if you haven’t been to more than five.”
[50/100]
“How many have been to more than half the states?”
[10/100]
Once you get to a small enough number, you can have those people explain where they haven’t yet been, etc.
Prepare a number of questions, and your hour will be used up fairly quickly!