I've finally been able to abandon these!
I left the first box at a coffee shop and unfortunately didn't get a chance to take a picture.
The second one I left in a booth at a diner:
I left the third box on a windowsill in my apartment building:
(unfortunately I forgot to take a picture of the inside of the boxes, which are very cool)
I left this one on a wall in a park:
And this one on a bench in a courtyard:
And I'm keeping the necklace, which I really love: