Improved Displacement Cube - Used for easy normal setting when editing displacements. You know the "Surface Normal" setting in the displacement editor window that always faces up? Turns out you can change the direction of that arrow using alt + right-click on another brush surface. This displacement cube acts as a library of face normals to quickly select. This cube is different from other displacement cubes I've seen because it also has corners so you can select diagonally and up or down!