The add-a-quarter ruler has been too useful for me to want to give it up. I keep it handy with my paper-piecing equipment and believe that it makes things go faster because I can "feel" my cut rather than measuring. I also have a piece of straight-cut template plastic to use as a straight edge for folding paper, a small swivel cutting mat that can sit right beside my sewing machine, a small rotary cutter and mini iron. This is my PP tool kit.