I've already discussed the symbolism of the japor snippet a little in my personal journal, but I feel the need to elaborate on it...
Anyways, we all know how Anakin gave Padme the japor snippet as a good luck charm in TPM. Unfortunately, it wasn't in AOTC, but most Anakin/Padme fans were glad to see it show up again in ROTS. In ROTS, Padme on her death bed says that there is still good in Anakin. Padme was also buried with the japor snippet. However, something was left out of the movie.
You see, in the ROTS novelization she was holding the japor snippet as she said there was still good in him:
Padme reached across with her free hand, with the hand she had laid upon the brow of her firstborn son, and pressed something into Obi Wan's palm.
For a moment, her eyes cleared, and she knew him.
"Obi wan...there...is still good in him. I know there is...still.."
Her voice faded to an empty sigh, and she sagged back against the pillow. Half a dozen different scanners buzzed with conflicting alarm tones, and the medical droids shooed him from the room.
He stood in the hall outside, looking down at what she had pressed inro his hand. It was a pendant of some kind, an amulet, unfamilar sigils carved in some sort of organic material, strung on a loop of leather. In the Force, he could feel traces of the touch of her skin.
I think there was a reason why Padme gave Obi Wan the japor snippet as she declared there was still good in Anakin. Remember, he gave her the japor snippet a long time ago, when he was still an innocent boy untainted by the Dark Side. So, to her, the japor snippet symbolises Anakin's innocence, and she basically believes that the same innocent boy who'd gave her that japor snippet is still somewhere deep in Anakin's heart. Anakin was no longer literally a boy in ROTS, but Padme knew that underneath all his darkness, the same goodness that he possessed as a nine year old slave boy remained in his heart which is why she never completely lost faith in him.