his glasses
When Jack accused Piggy of not helping much with the building of the fire in chapter2: Fire on the Mountain Simon defended Piggy by mentioning that they had used Piggy's spectacles to light the fire so he had helped in that way.
Piggy and Ralph's plan to build a signal fire is flawed because they don't prioritize maintaining it properly. They struggle to keep the fire going, resulting in missed opportunities for rescue. Additionally, their lack of supervision allows the fire to spiral out of control and contribute to a disastrous outcome.
The other two characters who helped keep the fire burning in "Lord of the Flies" were Piggy and Simon. Piggy was responsible for suggesting the idea of using Piggy's glasses to light the fire, while Simon helped to gather wood for the fire.
Ralph wants to get Piggy's specs back and Piggy wanted to kill Jack there and then.
They took Piggy's glasses, and fire from Ralph's camp.
Piggy suggests building the fire on the beach by using the lenses of the boys' glasses to focus the sunlight and start the fire. He recommends using the lenses like a magnifying glass to create the fire. Eventually, they successfully build the fire on the beach.
they use his "specs" to focus the sunlight to set the wood on fire.
It is Jack's idea to use Piggy's glasses to start the fire. Jack steals the glasses right off of Piggy's face without even asking him first.
The boys use his specs(glasses) to direct the sunlight to the sticks on the mountain and make a fire.
Piggy and the twins come to Ralph with a feast of properly ripened fruit.
Ralph defends Piggy from Jack when he refuses to help with the fire. Ralph argues that Piggy contributes by thinking and suggesting ideas, even if he is physically unable to help. Ralph recognizes Piggy's value to the group beyond just physical labor.
They decide to let the fire go out at night and light it again in the morning