In Assassin's Creed Embers, when Shao Jun was about to leave for China, Ezio Auditore gave her a small box and told her only to use it if she gets lost.
In Freedom Cry, Bastienne Josèphe gave a small box to Adéwalé.
In Assassin's Creed Rouge, Shay stole a small box from Charles Dorian after assassinating him.
Whats in the box. Its been killing me.