I was going to make this just like the "I Love Cats" quilt with hedgehog and bunny fabric instead of the cat fabric. Then I decided I would make Windmill blocks instead of pinwheels.
I spent 2 days looking for my instructions for making 4 quarter square triangles at once that were all the same. I had it figured out a few years back and I wrote instructions for it so I could do it again. I saved it in my computer but didn't remember the name under which I saved it. I had it almost figured out again when I came across it by accident.
This photo shows the lines I drew for cutting and stitching the layered squares.
Here it is cut apart cut apart. I've stitched to the center on the quarter inch line drawn to the right of the center line and then I shift to the line drawn on the left of the center line. I do this in both diagonal directions. This is helpful when making 3 piece triangle squares, I sew first and then trim and I don't have to deal with working with cut triangle points.
The squares I work with all all cut the same size for simplicity. I use this technique for accuracy; I'm not sure if it is faster but my goal is not speed but accuracy. Accuracy means far less frustration.
So... I made all the Windmill blocks and moved on to the alternate, square in a square, blocks with the hedgehog fabric. I got one made and put it up on the wall between some of the windmill blocks and stopped. The hedgehog fabric and the bunny fabric would not hold up to the brighter pinwheels. What was I thinking? All the bright fabric came in a fat quarter bundle and I bought the bundle for the "solid looking" fabrics but why not use the other three fabrics in the bundle. Oh.... and forget the square in a square too and skip all the bias edges.
I have come to the conclusion that fat quarter bundles may not be a good idea for me. I am definitely trying not to add any more fabrics to my stash or leftover scraps to my bins. Fat quarters seem harmless but if you change directions after you have done some cutting or make cutting errors some of your options are lost. Then there are the fabrics in the bundles that I probably wouldn't buy otherwise and they go into the stash and if the time comes when they are just right for something else the fat quarter is not big enough.