This is a favourite! It allows you to make stars that will be fabulous every time. They are designed to be floating so that you will never cut off the tips of the stars with your seams.
Also provides a couple of great border options. Stars and points can be made in several different sizes. Lots of design ideas in Deb Heatherly's book.
Also there are many patterns that use this tool. Check them out in the photos and get one with the ruler today!