Blender 2.8x Outliner - Manually Reorder Objects within Collection In my Blender project I have collections like so:



And I would like to manually reorder the objects within the collections. For example, within the collection named Fat Donuts, I would like the order to be:

Letter D...
Letter O...
Letter N...
Letter U...
Letter T...
Letter S....


I cannot get those items to change order using straight drag-and-drop. I did notice that the order is initially based upon the order in the items are placed into the collection.

I have turned off sorting as you can see here:



I know it is possible to manually reorder elements within collections, but I cannot figure out how to do it.
As you've mentioned, uncheck 'Sort Alphabetically' first to allow manual arrangement. After doing that you should be able to reorder the layers by clicking and dragging them around.
The dark highlight over a collection indicates that you're joining your current selection to another and the dark line indicates that you're placing a collection above/below another collection. 
Holding down control while dragging a collection parents the current selection to the one you're dragging it into but still allows it to be higher up the hierachy.

Maybe this question was asked before a newer Blender release and a potential issue was resolved. (Using Blender 2.81a)