Use a fork to mash the potatoes
Use a whisk for a smoother texture
Use a wooden spoon to press and break them up
Use a potato ricer if available
Use a food mill if available
Use a hand mixer on low speed
Use a stand mixer with the paddle attachment on low speed
Use a large fork and the side of a bowl to crush them
Use a rolling pin to press them in a bowl or bag
Use the bottom of a sturdy glass or mug to mash them