Oh, yeah - 1 1/2" HSTs! Lots of them. No, I'm not making another RRCB quilt - but the design does have some similarities, and it is planned to use those string blocks I didn't put in my mystery quilt. I've also cut this one down to 72" square. Of course, I could always make more blocks if I'm not too burned out. It might end up bed size.
On another front, here is a picture of what I finished yesterday afternoon, the Cluster of Lilies quilt: