Camp Necklace

The Camp Necklace is given to each Camp Half-Blood camper at the end of each summer at Camp Half-Blood. The cabin senior counselors vote on the biggest event of the summer and paint it on a bead.

The Lightning Thief
Features a black bead with a green trident. This was given to the campers on completing their first summer at Camp Half-Blood. The bead represents the most special event of that year, Percy's arrival at Camp Half-Blood.

The Sea of Monsters
Features the Golden Fleece hanging from Thalia's pine tree. This was given to the campers on completing their second summer at Camp Half-Blood. The bead represents the most special event of that year, the retrival of the Golden Fleece from Polyphemus' Island by the campers to save Thalia's pine tree from poisoning.

The Titan's Curse
None, since the beads are given in the summer. The events of this book took place between The Sea of Monsters and ''The Battle of the Labyrinth", during the the time of the winter solstice.

The Battle of the Labyrinth
Features an intricately designed maze to represent Daedalus' Labyrinth. This was given to the campers on completing their third summer at Camp Half-Blood. The bead represents the most special events of that year, the battle that took place in the Labyrinth and the events related to it.

The Last Olympian
Features the Empire State Building with the names of the campers who fell in the Battle of Manhattan in tiny Ancient Greek letters. This was given to the campers on completing their fourth summer at Camp Half-Blood. The bead represents the most memorable event of that year, The Battle of Manhattan against Kronos' army, the terrible casualties and honour to the loved ones lost.

The Lost Hero
It does not mention a bead being made because it was in the winter, during the same year of The Last Olympian.

The Son of Neptune
No bead was mentioned as this story focuses on the Roman campers at Camp Jupiter and they do not give beads, instead burn a new line on the tatoos on the arms of their campers.

Annabeth's Necklace
There are five beads on Annabeth's necklace at the start of The Lightning Thief, from the years before Percy's arrival on Camp Half-Blood. The ones she mentioned were- the beads featuring Thalia's pine tree for her first year at camp, a Centaur in a prom dress and a Greek trireme on fire. Percy interrupts her, so the last two of her beads are unknown. It is assumed Luke has the same set, since he and Annabeth arrived at the same time. But since Luke left Camp Half-Blood, and he does not have the 2nd, 3rd, and 4th beads. Annabeth also has her father's college ring on her necklace.