Uses of the 3D Cursor I know the 3D Cursor can be used to position new objects, or snap existing ones to a certain location - but what else can it be used for?

An exhaustive list of every possible use would be great (without repeating similar things like "pivot for spin tool", "pivot for screw tool" - which could simply be said as "Pivot for modeling tools").
Below are some uses of the 3d cursor in Blender with examples


Precise placement of new objects
Pivot for transformations, example - Transforms moving around the 3D cursor?
Pivot for modeling tools and modifiers (e.g. mirror, spin, screw...)
Moving the origin of objects (Ctrl-Alt-Shift-C), example - Change pivot or local origin of an object
A visual placeholder, for example to remember where something was previously in an animation.
Accurate relocation of objects/relocating objects to exactly the same place
Source location for the Clone Brush Tool (Ctrl+LMB to set).