A Clockworkpi DevTerm [1] is a modern equivalent of TRS-80 Model 100 and could work for this. Should try bringing mine next time I have to go to an onsite.
Could also use a proper one with a serial/wifi modem and telnet into a remote system to take notes [2].
I wish Clockwork Pi would release the DevTerm with a full-size keyboard. Same internals, same everything (even the screen could stay the same size). Without a full-size keyboard it's not really a solid replacement for the Model 100 for writing/notetaking.
Could also use a proper one with a serial/wifi modem and telnet into a remote system to take notes [2].
1. https://www.clockworkpi.com/product-page/devterm-kit-r01
2. https://www.buildon.aws/posts/i-deployed-kubernetes-with-a-1...