How could a quick-sketch perspective drawing most easily be made?

The correct answer to this question is Using a perspective grid. This tool would be used in the software Adobe Illustrator. Using a perspective grid allows the creator to have a scene represented on a flat surface. This representation is how it would appear to the human eye.

There are many ways this is done through the perspective grid, including creating objects in perspective, controlling the different perspectives, and transforming the objects. Adobe Illustrator gives the illustrator presets, which are one, two, and three-point presets. In this software, a creator can move the grid, name, scale, and export the presets.