In drawing, scumbling is sometimes used to describe a random, scribbled texture, with figure-eight and concave shapes used to create a spiky texture, rather than the common circular scribble. Some teachers have come up with their own inventive names for the method, such as 'squirkling' or 'brillo pad' (the later after a brand of kitchen pot-scourer.)
Painterly scumbling effects can be created by using fine pencil lightly applied in a random fashion. The softening or blending effect of dry scumbled paint can be mimicked by using layers of light, random erasing combined with random hatching. Shading with the side of a pencil or broken pastel can create a similar, open texture.