On tmux, I use split panels more often than tabs.

Usually, there will be from 2 to 8 panels of different sizes.

This gives me spacial short term memory: I know what each shell is by the panel position.

I can zoom on then to bring them full screen (ctrl+b z) if I'm going to do anything that requires more space, then zoom out to the panel arrangement when I'm done.

Sometimes I'll name prompts (eg `PS1='stg$ '`), specially when working with ssh, but that's rare.

What inspired me to work this way was this video on the acme editor: https://www.youtube.com/watch?v=dP1xVpMPn8M