I have a tiny HDMI screen which I can power from a USB port which I can plug into a computer if for some reason it is unreachable over the network. (this one: https://www.amazon.com/dp/B0B1L935ZT ), and a tiny keyboard with built-in track pad (something like https://www.amazon.com/dp/B00B9996LA ).

They're stored together in a small box with all needed cables, so they're easy to take with me to whichever computer is having issues. In practice I only use them a few times per year.