A Weighted Storage Cube on a Super Button from the Portal game series. Rendered in Cycles, no texturing at all. Please note this is just my personal interpretation of the model, so it is not an exact reproduction.
Yea I kinda forgot about that. Anyway I think it's just a problem with the preview, the .blend shound have the cube falling and pressing the button. Thanks for noticing though. :)
The button does not appear to be pressed. ;)