I have been wanting to make what is called Strip Tube piecing. I don't think that the quilter had any pattern in mind but just sewed a lot of strips together. You just have to decide how large of the blocks you want to make. They are really just simple HST. I Google STRIP TUBE PIECING and this PDF file had simple instructions. This technique using jelly roll strips but as in the photo of Scrappy Quilt show, she just used a variety of skinnier strips.
https://www.cozyquilt.com/PDFs/STRBonusGuide.pdf