Leather Material using blender-internal Textures only.
I will use this material in a scene with 1BU = 1dm, but I set up the nodes in a way that you can easily adjust the scale according to your needs.
The colour is also easily adjustable, i provided some examples.
Since the textures use the UV coordinates as input, the material could probably look strange on objects that are not UV-unwrapped.
I'm new to clycles and material nodes, and I'll be thankfull for your comments and suggestions.
Please note: this is not a "renderable" test scene, you will have to append or link the material to your own file.