I really like the look of backing made from 3 or more vertical "stripes". I used three for my 9 patch quilt for my own queen sized bed. I fold back the top a little to show the stripes when I make the bed each morning. My next quilt will have at least 5 vertical strips.
One thing I like about this method is that it is easy to make a square backing. This is the one instance where I use tearing to get straight of grain seams. To me, these seams make a good reference point while basting the sandwich to keep the backing on the straight of grain.