I finished Renee's mystery this afternoon. Woven Rings. Can you see the green and yellow circles?
The funny part is that somebody mentioned that it looked like those chairs/furniture with wood woven in small circles. I had to think hard (and back to the 1980s) about what she was referring to. But I had a nice laugh about the unintentional pattern. :)
I'm thinking I might add another "round" of blocks to the bottom and left side, so the green dominates. That will make it from 36" to 42".