Style-wise, this wooden binary adder wins: http://woodgears.ca/marbleadd/ http://woodgears.ca/marbleadd/ This MIT project uses Fluidics, making computers from

Style-wise, this wooden binary adder wins: http://woodgears.ca/marbleadd/ http://woodgears.ca/marbleadd/ This MIT project uses Fluidics, making computers from water: http://www.blikstein.com/paulo/projects/project_water.html http://www.blikstein.com/paulo/projects/project_water.html So if electrons are fire, we now have wood and water. I suppose these wind-powered walking robots complete the set: http://www.youtube.com/watch?v=a7Ny5BYc-Fs http://www.youtube.com/watch?v=a7Ny5BYc-Fs