Hi Rama, My favorite quilting tool is called a "Shape Cut". It is made by the June Tailor company. It is about a 16" square piece of plexiglass with slots every half inch. You put your rotary cutter in the slots and you can cut squares, rectangles, strips, hexagons, half square triangles and more. Because of its shape it does not tend to slip like a ruler does. I have had one of these for years and I show it to all the quilters who come into the store where I work. I love this tool. We sell them for around $36.00 in our store but I found the same thing at Walmart for about $17.00. this tool is worth it's weight in gold!