The term 'playground staple' refers to two common pieces of playground equipment: the SEESAW and the SLIDE. The SEESAW is a lever balanced in the middle, with two seats on either end that can be used by two people to move up and down. The SLIDE is a sloping surface that allows children to SLIDE down from a higher point to a lower one. Both of these pieces of equipment are popular among children and can be found in many playgrounds.