I bought a portable monitor, 15.6", USB C powered (5V, yes, a phone charger will power it - also a battery pack!).

This will be good for everything from a second monitor while on the road, to a portable TV (with my Chromecast/Nintendo Switch/Pi Zero W), and is also really handy while moving as I sold my regular monitor and wanted to be able to use my Mac Mini but not have to buy and return a regular monitor! Now, back to dreaming of 15.6" of Nintendo Switch gameplay whilst on a plane 🤓