The first kitchen tool to try is a potato masher. Overmixing your potatoes as you mash them or after you've added your liquid ingredients is the quickest way to make gluey, gummy mashed potatoes.
Related: The Best Potato Mashers, According to Our Tests A potato ... Potato ricers are versatile kitchen tools — you can also use one for homemade applesauce, guacamole, or crushed tomatoes ...