Here is the entire list of hidden things from NM by Chris Weitz, courtesy of Entertainment Weekly.
1. Hidden wolves
''Look for an upside-down engraving of a wolf in the shot of the bowl in which Carlisle burns his first-aid equipment; on Jacob's T-shirt when he meets Bella in the school parking lot for the first time; and a wolf trinket on the dream-catcher that he gives her.''
2. Vampire elevator music
''When Edward, Bella, and Alice get into the elevator on their way to see the Volturi, the music playing in the elevator is from Strauss' Die Fledermaus (a.k.a. The Bat).''
3. Emotional baggage?
''When Bella is looking for the meadow where she and Edward are seen lying down together, she carries a golden compass clipped to her backpack — part of my baggage!''
4. Speedy suitor
''We did a little trick when Edward gets out of Bella's truck and they're arguing. We wanted to show Edward moving impossibly quickly, so we put Rob right next to the camera but out of sight, and used a double dressed like Rob in the driver's seat. When Edward gets out, it's the double, and then Rob steps in front of the camera, and it looks as if he got there faster than humanly possible.''
5. Look it up
''And last but not least: If you want to know what Jacob says before he almost kisses Bella, ask a Quileute! The address of the Quileute tribal council is quileutenation.org. I can tell you this much: He says, Kwop kilawtley.'
6. Tower of glower
''You can see Volterra's tower and the red-cloaked revelers from the festival of San Marco on the cover of Bella's copy of Romeo and Juliet when she wakes up in her bedroom.''
7. Hope it was a rental...
''In the wolf-fight, we purposely knocked over the camera when the wolves tumble towards it; you can also hear the microphone thumping, as if an actual on-set animal had run into the camera and boom.''
8. Quileute culture
''When prepping to visualize Jacobs and Emily's houses, production designer David Brisbin and his team visited La Push and met the Quileute executive council. While they were there, a young Quileute girl gave David the first drum she made (this is a Quileute custom). To show appreciation, we decided to put the drum in a prominent shot — it's at the entrance of Emily's house, and you see it when Bella first enters. Also, the high pitched 'call' that Embry and Jared give when they jump out of Bella's car is a thing the Quileute kids do.''
9. Waxing romantic
''The reason the moon phases 'backwards' to reveal the title is that this is scientifically correct! I moderated an astrophysics seminar for the Science and Entertainment Exchange with noted astronomer Neil DeGrasse Tyson and he complained about the number of films that get simple science wrong. (Don't ask me to justify vampires or werewolves).''
10. That's Italian!
''In the Volturi chamber, Aro speaks Italian — 'La Tua Cantante' should be easy for readers of the books — he's referring to Bella's being Edward's 'singer,' whose blood calls out to him stronger than anyone else's. Later, when Bella tells him that he doesn't know anything about Edward's soul, he replies, 'Fore ... ne il vostro l'uno o altro' — 'Perhaps ... nor yours either.'''