Papercrete Projects
My 33' Diameter Papercrete Dome House
Molded Papercrete Building Blocks Experiment

You'll be amazed as you read Judith's blog. She has worked out a simple method of building slipformed papercrete walls topped with a papercrete roof, making a cozy cheap shelter that is about as green as you can get. She has done all this with a little help from her friends.
She also has DVDs available, showing how to do it all.