As I have a clay brick factory I often have "reject" bricks , like these under burnt/salmon/soft bricks in the wall below and over burnt and misshapen bricks in 2nd picture.
Here is a project using both.
I am about to rent the groined house, and an employee of the United Nations was interested but their security ruled it out as the thorn hedge had no chain link in it. So i decided to try a 2m garden wall with a masonry cap.
We had a brick kiln go bad so we had many salmon bricks and made this wall. footings then stones to get me above ground , then clay mortar up 170cm. columns every 3 meters.
What do you do with this junk below? You bang and chop on it and get a reasonably shaped clinker. I want over burnt for the overhang for strength and water proofing.