You could use a Samsung Tablet with Dex that supports the Samsung pen, and connect a portable monitor to it. There are decent portable monitors under $100, certainly enough for watching lectures. The two displays wouldn’t be connected by a hinge but by a usb C cable. In return the display sizes and orientations wouldn’t have to be the same. If the portable monitor doesn’t support touch, I recommend throwing a bluetooth mouse into the mix to make navigation easier.
Edit: I could also confirm it working with an iPad (Air, M1) and said portable display. But iOS forces you to connect a bluetooth mouse and keyboard to be able to extend the display instead of mirroring it.
You could use a Samsung Tablet with Dex that supports the Samsung pen, and connect a portable monitor to it. There are decent portable monitors under $100, certainly enough for watching lectures. The two displays wouldn’t be connected by a hinge but by a usb C cable. In return the display sizes and orientations wouldn’t have to be the same. If the portable monitor doesn’t support touch, I recommend throwing a bluetooth mouse into the mix to make navigation easier.
Edit: I could also confirm it working with an iPad (Air, M1) and said portable display. But iOS forces you to connect a bluetooth mouse and keyboard to be able to extend the display instead of mirroring it.