Tritium
As a watch nerd and a huge Trekkie, I (@hober) fucking love that an old diver with tritium lume plays an essential part in furthering the plot of this episode, and that La'an brought it with her back to the future. Like many watch owners, this piece is now inextricably linked with a significant moment in her life. I hope as we get glimpses of her quarters in future episodes it's still there, sitting on a shelf, reminding her of what she did and what she lost.