I saw a darling baby quilt in the window of a quilt shop using 6 1/2 squares. I liked it so much tha I am working on one now. I used a 6 1/2 in square of a solid and used 1 1/2 in sashing 6 1/2 in long. I have a 1 1/2 in square of another print in the corners. The 6 1/2 in square has stitching in the middle of it using a double thread in the needle. I chose juvenile type things like a duck, dog, cat, train, etc. I will post picture soon. But if you had a random selction of 6 1/2 in squares, you could pull them all together by using a coordinating sashing, and any size you made would look really pretty.