You can use your daily calendar as a Do Today list if you will need one that day. AFTER your daily review, schedule tasks into your calendar from your desktop Do Today list. Spread them thoughout the day, leaving buffer time, and work entirely from your calendar that day. This does not replace your regular task list, but it keeps you on track when you’re on the road.
If you decide to do this, add this as a step in your daily review appointment (in your calendar).