[petesergeant]

The difference is huge: a keyboard and mouse and laptop stand fit very easily into a backpack / briefcase, where an additional monitor does not

[theshrike79]

You should look up portable monitors. They are crazy small, cheap and good nowadays.

You can get a 15-16" OLED external display with a battery for around 300 western monetary units. Half that if you stick to IPS panels[0]. You can shove one of those in a backpack easily.

[0] https://www.amazon.de/-/en/Portable-Monitor-Connection-Raspb...