I love clever, quick quilty ideas, and this one is magic! First, take two squares, one light and one dark. (Mine measured 7.5 inches.)
Then sew, cut (but no strips!!) and hey presto, two nine-patches of 6.5 inches!
As ever, this isn't my idea, and if you want the method, you'll have to look at Barb's blog for the full instructions. Happy sewing.