I know I'm a broken record sometimes but the Converging Corners block is a fantastic use of different widths and scraps. You can even use scraps of background fabric instead of using all the same for a totally scrappy winner!
http://filminthefridge.com/2012/02/2...ck-a-tutorial/
Here's a beautiful rainbow scrappy version:
http://waterpenny.net/converging-corners-rainbow-quilt/