I've just re-evaluated my contexts, particularly my work/computer ones. For me, contexts aren't just places/physical resources, but also 'states of mind' for want of a better phrase.
My job entails design/resolving issues, which requires concentration and decision making, and documenting those decisions or writing about other technical information, which is less mentally demanding. Once I'm in the groove for designing I'd rather continue in that context and do as many of those actions as possible. Therefore I've split my work/computer-type contexts into:
Office - any admin/general job-related stuff.
Analysis/Design - next actions that require some thought.
Writing/Docs - next actions which are just writing up information.
Browsing - mostly personal stuff which I can do at lunchtime or at home.
Laptop - my home computer, excluding web browsing.
I have a 'Work' filter (using Bonsai) which shows me Office, Analysis/Design and Writing/Docs contexts grouped together.