Deciphering Death's Intentions

[item=175769], [item=180799], [item=180802], [item=180804], [item=180806], [item=180808], [item=178044], [item=180801], [item=180803], [item=180805] - from all enemies in the Maw with a small chance.
[item=183063] - little page on the altar (/way 19.36 33.40)
[item=183067], [item=183068], [item=183066] - from [npc=170303] (/way 20.66 69.08), [npc=162844] (/way 18.94 57.25), [npc=170634] (/way 32.86 66.50)
[item=183069] - from dead elf's body (/way 35,70 45,51)
[item=183058] - from all enemies in the Maw with a small chance. The biggest chance from [npc=176013]
[item=183061] - from [npc=172207] (/way 38.49 28.74)
[item=180807] - from all enemies in the Maw with a small chance. The biggest chance from [npc=177067]
[item=183060] - from the chest in the cave with [npc=171307]. Cave enter- /way 27.92 20.41
[item=183057] - from [npc=174861] - The Hunt with hounds
[item=183059] - from [npc=167322]
[item=183070] - from [npc=168693] (/way 29.76 23.91)

Sorry for my English, can have some mistakes

Some of these items are guaranteed, they drop only from specific interactable items around the maw. Said items are:
Tormentor's Notes - /way 35.74, 45.57 on night elf body
Words Of The Warden - /way 19.37 33.42 paper scrap
Box of Torments - /way 27,7, 20,2 cave entrance /way 72,6, 17,4 Torture Implements

The guaranteed items grant 150 rep each for Ve'nari.

Info on these has been taken from other wowhead comments on said items.

Rest of the items should drop from mobs around the maw, some from only specific rare/regular mobs.

Some of these drop from any mobs, while others drop from a specific one. Most have a daily "chance" to loot, such as ones dropped by rares. A couple are found on the ground (and dont require killing mobs to obtain).

Each of them will start a quest that you turn in to Ven'ari, providing some amount of rep (~150 or so).