Recently, my family helped me build a cob oven in our back yard. We used locally sourced clay, sand and some straw to build the oven dome over a base of concrete block, and a brick base. Once it was dry, it was time to start heating it up, and...
If you can make a mud pie, you can make an oven from clay, sand, and a bit of labor. Here's my account of building a low cost wood fired oven using easy-to-find material. Pizza, bread, and fun!