Uhm, I don't know if this is in the right place but, as of Ijji, these are the most current (I Think) Quest Item List Combo's.
Future Apology if this is in the wrong Section.
I did throw bits and pieces from sites, editing this for my own way to attempt to help someone.
The Percentages are the average drop rate, the monster names showing are the monsters usually found carrying these object/objects.
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Large Skull 6% Giant Skeleton Yes (with Skeleton Doll)
Mysterious Skull 6% Cursed Corpse Yes (with Skeleton Doll
Goblin's Skull 6% General Goblin Yes (with Crimson's Necklace)
Enormously huge Skull 20% Superion The Tainted Yes (with Devils Dictionary)
Crimson's Necklace 6% Elder Goblin Yes (with Goblin's Skull)
Skeleton Doll 6% General Skeleton Yes (with Large Skull)
Goblin Doll 6% General Goblin Yes (with Goblin Skull/Palmpow Doll)
Pampow Doll Yes (With Goblin Skull)
Pampow Idol Yes (with Kobold doll)
Cursed Pampow Idol Yes (with Skeleton doll)
Devil's Dictionary 20% Aneramon The Wicked Yes (with Enormously Huge Skull)
------------------Other Items Able To Sacrifice-------------------
Torn Page 13 Yes
Torn Page 25 Yes
Torn Page 41 Yes
Torn Page 65 15% Goblin King, Superion The Tainted, Lich, Aneramon The Wicked Yes
Iron Earring Kobold Soldiers Yes
Silver Earring Kobold Mages Yes
Gold Earring Kobold Knights Yes
Platinum Earring Kobold General Yes
Scrider's Register Volume I Yes
Scrider's Register Volume II Yes