Here's a 3d sculpture project I constructed 100% LEGIT on my usual server, SerenityMC.net. I took Hatsune Miku's head, modeled it 50 meters high, and then built it out of about nine thousand hand-collected, hand-dyed, hand-placed cyan wool blocks.
And what did I do when it was done? I partnered up with my friend cedicine, and we built a fully functional Dance Dance Revolution game... INSIDE the head. All the circuitry from drums to melody to scrolling dance display to dance judging and reward delivery... everything working within the head space.
Watch on YouTube... still photos don't do it justice.