My tip of the day is to use the rooms facility to create both rooms and systems for ease of navigation.
For example I've got each room, plus "system AV", "System Alarm", "System Utilities" etc.
Things like room temps, lux levels and actual devices like lamps I've got in the rooms.
The actual motion sensor I've put in "System Alarm" along with my PLEG device.
"System Utilities" homes plugin devices and the like, vera alerts, day/night switch etc.
Obviously everyone has their own ways and means, and what works for one doesn't for another but the better you organise your structure the easier it becomes to find things, make changes and come up with new ideas of how to control things