I couldn't find a tool to easily display command output in a limited scrolling region of the terminal, so I built a bash script that does that. It uses the terminal's built-in scrolling region capability.
I call it "peek" 👀 . You can think of it as a combination of watch + tail.
Source: https://gist.github.com/literallylara/fb2d47789ac3cd0ff9b771f5e7dc86f3