There's a nice paper model from Shunichi Makino.
I made Drone # 1 in 3D Studio Max years ago. Eventually I'll get it 3D printed. I keep hoping McFarlane will do a line of famous Film Robots. The drones, Gort, Robby, B-9 (yeah, a tv bot, but still cool), Maria from Metropolis, would be a nice start.