my idea for a puzzle in grim fandango 2
you need a letter delivered to someone , but he/she can't know its from you! Also, you know what the person looks like, but you have no picture of the person. You can't get anywhere in his/her field of vision or Manny will say "I shouldn't do that because if he/she sees me..." You have an LSA bird & a polaroid. Take a picture on top of a building where just over the side of the top the building (in your field of vision) is a window behind the person. Take the picture of the window (& therefore the back of the person's head), give the picture to the bird when it developes and the note you need to send. Manny says: "I hope it can tell the back of heads apart." The bird delivers the note.