This is the beginnings of a scrappy cathedral window quilt, which I am not making the traditional way because this way is simpler and faster. I might make one the traditional way sometime, though.
It has seven Bella Solids Blue charmpacks (minus four squares), one Moda Acreage charmpack (but not the novelty prints), two Kimberbell Basics charmpacks, 97 squares saved from various charmpacks and a scrappy one I had for some reason I can't remember, and 104 squares from stashed fabric.
That is 576 squares and the most I have ever used in one project. Assuming I did the math right, the quilt will have 64 window units and be about 70x70 inches. But I won't know for sure until I make it.