Merlin details his Alarms-Reminders-Calendars-OmniFocus-TaskPaper-notes “stack” in the last half of a recent Back to Work episode. Starts at about the point in the link below:
It’s well worth a listen. As ever with Merlin, he cuts through a lot of overcomplication with some simple and poignant ideas.
Worth noting that his use of OmniFocus is actually pretty limited these days.