What are some objects mentioned in Twilight that you can explain the symbolism of?

Well, there is the vampire's skin. It symbolizes perfection, but then the loss of taste shows that it comes ata price. You had the truck slightly right, but I think that it shows she's a down-to-earth-girl who only needs to live by necessity, not flashy or showy things. There's also that the Cullens keep to themselves, and don't stray to far from each other. It symbolizes the fact that there nervous, and worried how the normal human population would react to them. Naturally, they'd keep their head and not do it.