My favorite tools are found items and my fingers. I use the ends of paint brushes to make delicate turns. My exacto knife to cut in patterns and tiny details. I take apart pens to make templates for circles and other needed shapes. I also use the grips on things to make patterns - ex - exacto knife handles have a cross hatch pattern that looks great on rolled clay. I really like the corn starch suggestions and will have to use those. Oh and tin foil is another favorite tool for wrapping items in to keep them from burning and to make textural patterns.