I was getting ready to sandwich a lap sized quilt this morning and realized that the backing is about 3" short of being wide enough for a one piece. Crap....that means that I now have to piece in something to make it work. I have a few extra rows of the strips from the front side and am thinking about splitting the backing down the middle and adding the strips to the middle. How do most of you add width to backing without spend $$$ or time?