Extra Content?, Possible end of game spoilers? Options

[Seve]

I was going to post this a day or so ago, but I got sidetracked, but anyway. I beat the game, and then there's something I didn't expect completely (but I suppose I really should have) and that was a little bar that read "extra contents." So I look through and find out I have the item manual and the credits. So my question is, where/what are the other extra content items?

[Dr Strum]

Rev. of the Gods (equipped to Nessiah in BF47) will unlock the Card List.
The Mirror of Truth (Pick-up in BF18) will unlock the face collection.
Old Music Box (Pick-up in BF28) will unlock the sound test.
Mesala's Tablet (Pick-up in BF44) will unlock the battle history (High scores, CGs and BF openings).

For those that don't know how to get the item section, it's the Item Manual (Pick-up in BF39).