Chavis' collection has 342 items, including multiple versions of Robbie Rabbit, the insane, blood-stained bunny from Silent Hill 3, an "official tourism map" of the town, figurines, toys, comics, posters and other spooky items.
You can check out a video walkthrough of Chavis' items here:
Amazingly, Chavis claims to have close to 20 more pieces in her collection from the time she shot that video. I wonder how many of them are at all related to P.T.?