Download Mesh Materializer Free Unity. 

The idea of Mesh Materializer is to generate and bake all possible data directly into mesh file:
• Textures and color from material
• Ambient Occlusion
• Indirect Lighting
• Lightmap data
• Mesh thickness
• Displace info
All above is baked into mesh vertex color and later can be used in custom shaders or various calculations.

Beside data baking Mesh Materializer offers various mesh manipulation tools:
• Generating ‘low-poly’ style meshes
• Optimizing mesh files by merging them and/or compressing
• Converting Unity terrains into meshes
• Adjusting mesh vertex colors
• and many others.

Core features are described in this video tutorials