I use the labels to help me separate the items so I can group them together in context. Here is an example: Labels: Computer_Phoenix, Office_Phoenix, Home, Errands. Then for the filters I have set up: Today - Phoenix is the name of the filter and the filter is written: (today) & @computer_phoenix, (today) & @office_phoenix.

The results are arranged so it shows me what I need to do when I am at my computer and just below that is a list of items I need to accomplish on the Phoenix campus but not necessarily using my computer.
Now I can work on everything using my computer first and then switch over to other items - this might include phone calls, on campus errands or reminders for staff meetings, or work that doesn't involve the computer.
Let me know if you want to see how this actually looks and I'll send you a screen shot next week.