good idea to model cob home before building.very smart idea, and would probably prove to be a fun weekend activity. I think if one is going to self build, one should make a model no matter what "type" of home one is building.
MICRO HOUSE WITH SKY LOFT. While it looks like a greenhouse, this coastal home in California, built by Mickey Muennig, has a removable window which helps keep the place cool. Would be cool as a smaller version for the backyard!
Wouldn't it be great to have a hobbit hole door coming out of your house! I would love to build a house on a hill and have a secret "hobbit hole" coming out of my basement! The Hobbit/Lord of The Rings or better yet, make it a play house for the kids.