Adding randomness with the Noise modifier

To make the cushion look a little bit more lived-in we can randomize the shape using a Noise modifier. I've cleared out my sub-object selection so that Noise modifier will be applied to the entire object. In the Modifier List I will scroll down looking for Noise. In the Noise modifier, I will need to change several parameters, for example, the Strength, currently it's set to 0. This is the maximum amount of deviation that a vertex will make. If I set these to 5 cm in each axis, that's probably a pretty good value, in fact, that's probably kind of a high value.

But as I do that, you see that apparently not much has happened. The reason is, I also need to adjust the Scale of the Noise; that's essentially the wavelength. A Scale of 100 is a very long wavelength, so we are not seeing much of an affect here, because it's being spread out over a very large area. All I need to do is click and drag and reduce the scale and you can see--oh there we go, we are getting some nice Noise. If I take that Scale down too low, we will get some very strange results. It will actually turn into some sort of abstract art piece.

That's a much too low wavelength. I just want to find the sweet spot there, and it was somewhere in the order of 10 cm or so. And as you can see now, we probably don't need that much of Strength, so I can reduce the Strength down to maybe like 2 cm in each dimension. If I want to adjust the pattern of the Noise, all I need to do is transform the Noise Gizmo. I will open up the Noise sub objects and you'll see Gizmo. Grab the Move tool and move that Gizmo around to change the placement of the Noise, to get different looks.

That's a pretty basic introduction to using a Noise modifier, you could do quite a lot with Noise, in fact, you could create mountains and all sorts of cool stuff with it. This is just a real basic introduction. You can have a lot of fun with Noise.