I created this quick project to get my head round the material system in Octane. Tried to get away with not UVing the keys and was mostly successful. The dirt shader combined with a texture is a nice semi-procedural way of generating edge wear. Octane's displacement is also interesting, as it renders extremely fast. The graphic details on the keys are created with displacement textures.

Modelled in Cinema 4D, dynamics with Realflow, rendered with Octane.