The method that I devised is based on Priscilla Hewitt's flat braid joining. I love the flat braid for joining squares, but when it came to joining yoyos with a separate strand of yarn for every yoyo, I drew the line. I wanted the same look without all the ends. My method lets you join a row of however many yoyos you want with a single strand of yarn. My giant afghan pictured below had only 50 ends to weave for the yoyo joining, versus 1500 that it would have had with the original flat braid method!
Here is the pattern: Simple Yoyo Square



















