You could use them as sashing around larger squares. If the larger squares are dark, then sash them with lighter strips & vise versa. When I make my denim quilts, I always sew next to the seam of every block I put together. Just makes everything lay better & holds the seams together to one side. Then I use fleece for the backing & tie them. I also use the scraps of the fleece to make the ties. Just cut strips about 1/4 inch & stretch them. They will curl & makes good strong ties that match the backing. They are heavy quilts, but everyone loves them & I have sold several.