Almost all of my work is on the computer, but I still have contexts. The contexts list shifts periodically; right now a sample is:

Design
Coding
Testing
Mindless
Thinking
Writing
Email
Paperwork
Waiting
UploadDownload (This one is useful for checking before I go off to lunch, to see if I have anything big that I want to move.)
Meta (These are tasks related to my GTD system)
Agenda (Items that require communication with other people)

Gardener