souvenir

/ˌsuːvəˈnɪr/
noun
  1. An object that you keep to remind you of a place, event, or experience.
    • She keeps a seashell as a souvenir of her summer at the beach.
    • The keychain was a cheap souvenir, but it reminded him of the museum.
    • I bought a small statue as a souvenir from my trip to Paris.