I struggle with when to use contexts because I am mostly a mobile worker meaning I can always run an errand, make a phone call, spend time on a work project, spend time on a home project, etc. So those contexts have not been all that meaningful for me. I think that is becoming more common for more people and noticed my instructor struggled to justify these contexts by constantly referring to the being on an airplane, one of the few places left where there are some limitations.
That said, context offers a second way of organizing time and presenting tasks so I feel like there is some powerful way for me to use it, but I haven't figured it out yet. The Waiting-For context is an example of this more interesting way to use contexts.
Perhaps state of mind would be an option (busy work, meaty work, etc.), but any more suggestions would be appreciated.