This, believe it or not, is a pile (two piles, in fact) of 99 quilted blocks.
Each block looks roughly like these:
I took a long time deciding what was going where, and who was sitting next to whom, but I think this will work.
And then I just had to see how they actually joined together, never having done quilt-as-you-go. Each layer has to be secured separately, so the top is oversewn in the usual paper-piecing way, then the batting is ladder-stitched together edge-to-edge, and then the backing seam is slip stitched closed. Sounds more complicated than it is, though it is fiddly and time-consuming – but then, really, you’re doing three parts all at once.
The first pair of blocks (fronts):