if you use iterm2 on a Mac, and aren't colour-blind, then there's a somewhat cool thing you can do with zsh+ssh: based on the hostname, change the colour of the tab to represent something like dev/test/qa/uat/stage/prod/etc.

Here's roughly what I use: https://gist.github.com/anthonyclarka2/f2aae1e167c7899d7d263...

It could also be adapted to anything other than ssh. For instance kubectl, aws cli, virtualenvs, etc etc.

Let me know if this helps, and if you have any suggestions!