Mill out logs for timber frame roof?
Rammed Earth is a different technique but I found the techniques used in this video to be interesting.
Here is a tv show documenting a couple building a CEB home: https://go.discovery.com/tv-shows/building-off-the-grid-on-discovery/full-episodes/earth-block-ranch
Here is a manual I found online that the government put together: https://www.huduser.gov/portal/sites/default/files/pdf/compressed-earth-blocks.pdf