Keepsake

"It's just... It's sorta like a charm..."

A keepsake, memento, or souvenir is a unique item that a person holds to be of special importance, reminding them of a person, place, or event. They range from photographs, toys, trinkets, and other memorabilia.^[1]^[2] Many are kept out of memory of the person who gave it or originally owned it. Being personal objects, they are mostly unrecognizable to outsiders. Within the UNSC Armed Forces, soldiers often pass along their dog tags as keepsakes for their comrades to remember them by.^[3]^[4] Although generally considered an unseemly act, and in the case of the United Nations Space Command, against protocol, some Covenant and human soldiers were known to keep souvenirs from fallen enemies as war trophies.^[5]^[6]

List of keepsakes

Individual	Items	Importance	Image
Catherine Halsey	Dr. Halsey's personal journal	Halsey bought her journal when she was eighteen and used it to record her life for the next 42 years. Inside she wrote personal thoughts, scientific diagrams, potential theories, and sketches of people and places significant to her life.^[7]
Cortana	Installation 04's Activation Index	Cortana took the Activation Index from its owner 343 Guilty Spark so that he could not use it to fire the Halo ring. The Index's contents put a heavy toll on her memory, due to containing a hundred millennia's worth of biological and technological data recorded on the ring, but came to help as a means to activate Alpha Halo's replacement.^[8]^[9]
Daisy-023	Teddy Bear keychain	Daisy once possessed a small teddy bear on a chain which she lost the day she was abducted into the Spartan-II program. Years later, her own flash clone gave one to her. Daisy kept it with her to the day she was killed in action on Harvest^[10]	File:1771879-gallery.png
Dimah Tchakova	A stuffed toy
Frank Kodiak	Type-1 energy sword	During the Covenant war, Frank Kodiak obtained an energy sword from a Sangheili warrior he had killed. Years later, he used the sword in a duel against N'tho 'Sraom, the Sangheili responsible for severing his right arm.^[11]	(A standard Covenant plasma sword)
John-117	A Quarter dollar, an antique United States coin.	The coin was used by Dr. Halsey to choose which of the potential children should become Spartans. Halsey let John keep the coin after he guessed correctly which side it'd land on.^[12] It was taken from him when he was abducted for the Spartans, but returned years later by Franklin Mendez, recalling how John had broken its thieves' fingers.^[13]
Jacob Keyes	Keyes' pipe	Keyes' pipe was a family heirloom. As he was not permitted to smoke aboard spacecraft, Keyes usually settled for chewing on it to aid concentration.^[14]^[15]
Levu 'Mdama	M12 Warthog	Kaidon 'Mdama was a Sangheili traditionalist but was known to have eccentric tastes. Due to his past vulgar tendecies, it was suspected that he was responsible for bringing a UNSC Warthog back to his clan's state as a battlefied trophy.^[6]	(A standard UNSC Warthog)
Michael Crespo The Rookie	Luna medallions	At the conclusion of the war, Mickey and the Rookie purchased circular medallions that resembled the surface of Earth's moon. The shocktroopers bought them to remember their common home, both having been born in Crisium City on Luna.^[16]	(Luna, Earth's only natural satellite)
Naomi-010	Planetarium lamp Dollhouse miniature chair
Parisa	A childhood photograph	Parisa had a photo of herself with a boy named John taken when they were six years old. John had saved her from drowning and promised to marry her. Two decades later, the now-Master Chief recognized himself in her photo but chose not to tell her who he really was.^[17]
SPARTAN-B312	Jorge-052's dog tag	Jorge gave his dog tag to Noble Six shortly before he sacrificed himself to detonate the slipspace bomb to destroy the Long Night of Solace.^[18] Six kept them as a reminder of Jorge's heroism, while the Covenant continued to assault Reach.^[19]
Thomas Lasky	Cadmon Lasky's and Chyler Silva's dog tags. A shard of a Mgalekgolo's armor.