The Cellular procedural texture is an advanced tool that can create a wide variety of texture maps. You can create a crumpled texture as shown here, or you can create cracked surfaces, orange peel paint, hammered metal and many more.

Scale
Use this to adjust the scale of the texture to fit your model.

Cell Type
Choose between circular, square or diamond shaped cells.

Bump Height
Use this to control the overall intensity of the texture map.

Contrast
Contrast refers the to the difference in the peaks and valleys of the bump map. Control them globally, or expand for finer controls.

Shape 1
Control the fractal shapes generated with this slider. Control them globally, or expand for finer controls.

Levels
Increase or decrease the levels of fractals being generated. Control them globally, or expand for finer controls.

Noise
Use this slider to add noise to the line quality of the fractal shapes.