We've had more guesses - including a pop culture quilt. All of the guesses so far have been partly right. Will it help if I mention that the little one for whom this is intended has parents interested in music and science fiction and fantasy?
I finished cutting out the blocks today, with a bit of inspiration from Crazy Quilter on a Bike. Wow! She talked about advancing on something every day, so I decided I would try that. So the piecing of the initial blocks has started. Yay me!
Here's the arrangement of the nine-patch:
There will be 12 nine-patches, and then the next step begins.
Yes, it's going to be VERY busy.