I purchased a copy of Handwoven recently to have a look at. Not much in there for rigid heddle, there is so much more you can do with 4 or 8 shafts. There was an article on shadow weaving and the first draft in the article was for log cabin.
Log cabin is fairly easy but gives a fabulous result. The result is striped blocks alternating between vertical and horizontal. This is achieved by warping alternating colours for the width of a block then swapping colours for the next block.
Then when you weave you do the same thing, alternate colours for the length of the block then do 2 of the same colour together and continue alternating.
It does take some concentration to ensure you remember to change at the end of each block.
I’m making a narrower scarf for Eno now in royal purple and navy.