A quick construction blocks scene, I doubt I'll win any prizes for advanced modelling with this scene but its more a study looking at plastic materials, gloss, light reflection and lighting. It's not quite right yet for instance I think the high lights are too soft, so I'll carry on tweaking. I might add some damage to the blocks and floor as well, nicks, scratches etc - to make them look played with and used.
Render time was 1 hour and 10 minutes on a GTX 295 and cycles set to 3000 passes