Is there a simple keyboard shortcut, or setting to enable a shortcut, or anything, that. would allow me to quickly move ALL open windows from the external display to the main laptop display?

The problem is that frequently, I need to plug the laptop for a presentation or a class and I have a bunch of windows on the external display that shouldn't be there. So I'd prefer it doesn't remember which windows were in the external display from work, and just assume I want all windows to start in the main display only!