Triangles on a Roll have been around for a decade. I bought my first TOAR in 2008 or therebouts at a quilt show. The vendor sold out of every roll she had after everyone watched her demos. I made hundreds of HSTs because it was so easy with the cut and sew method. I now use the Triangulations software to make my own in any size. Mrs. Rosie's Cake Mix recipe cards are the new version of TOAR.