I was wondering if it is possible, using Cycles, to combine two materials.
For example, I have wood cubes which have a procedural wood material from Blendswap, but each of them needs a texture on it (a letter).
Actually, I duplicate my "wood" material and plug my texture on it. So I have 3 materials (wood-A, wood-B, wood-C) while the "wood" part of the material is always the same, only the texture is changing.

Is there any way to make this easier to handle ? Like combining a "wood" material (identical for the three cubes) with a different texture for each of them ?