Yesterday I posted a little article on erasing without using your eraser at all.
Angeltread (Youtube username) came with another method I honestly overlooked myself.
Sometimes you may think that it would be handy if the eraser had the exactly same settings as the tool you are currently using for drawing. Be it the marker, pencil or pen tool.
In fact this isn’t a problem. What Angeltread does is just picking the transparent color from the color pallet without changing the tool. This way you can easily erase parts of your work with exactly the same settings you are using for drawing.