I was in the process of making an addon to list all of the DMF quest items so I could mouse over them to see if I had them in my inventory, on an alt, etc. Then, I realized that Altoholic and other such addons can show you where an item is just by mousing over the link in chat. I decided to not waste all the effort, and I made a simple function that I put into one of my existing addons to just run manually whenever needed. Here is the function if anyone wants to use the code.
The idea is that this just spams your chat window (not visible to anyone else) with all of the Darkmoon Faire quest items. You can mouse over the links in your chat window to use the inventory search functionality of addons like Altoholic to find the item(s) you need.
function CedDMFList()
ChatFrame2EditBox:SetText("/script DEFAULT_CHAT_FRAME:AddMessage(\"\\124cff0070dd\\124Hitem:71953::::::::120:::::\\124h[Fallen Adventurer's Journal]\\124h\\124r\");");
ChatEdit_SendText(ChatFrame2EditBox);
ChatFrame2EditBox:SetText("/script DEFAULT_CHAT_FRAME:AddMessage(\"\\124cff0070dd\\124Hitem:71951::::::::120:::::\\124h[Banner of the Fallen]\\124h\\124r\");");
ChatEdit_SendText(ChatFrame2EditBox);
ChatFrame2EditBox:SetText("/script DEFAULT_CHAT_FRAME:AddMessage(\"\\124cff0070dd\\124Hitem:71952::::::::120:::::\\124h[Captured Insignia]\\124h\\124r\");");
ChatEdit_SendText(ChatFrame2EditBox);
ChatFrame2EditBox:SetText("/script DEFAULT_CHAT_FRAME:AddMessage(\"\\124cff0070dd\\124Hitem:71635::::::::120:::::\\124h[Imbued Crystal]\\124h\\124r\");");
ChatEdit_SendText(ChatFrame2EditBox);
ChatFrame2EditBox:SetText("/script DEFAULT_CHAT_FRAME:AddMessage(\"\\124cff0070dd\\124Hitem:71636::::::::120:::::\\124h[Monstrous Egg]\\124h\\124r\");");
ChatEdit_SendText(ChatFrame2EditBox);
ChatFrame2EditBox:SetText("/script DEFAULT_CHAT_FRAME:AddMessage(\"\\124cff0070dd\\124Hitem:71637::::::::120:::::\\124h[Mysterious Grimoire]\\124h\\124r\");");
ChatEdit_SendText(ChatFrame2EditBox);
ChatFrame2EditBox:SetText("/script DEFAULT_CHAT_FRAME:AddMessage(\"\\124cff0070dd\\124Hitem:71638::::::::120:::::\\124h[Ornate Weapon]\\124h\\124r\");");
ChatEdit_SendText(ChatFrame2EditBox);
ChatFrame2EditBox:SetText("/script DEFAULT_CHAT_FRAME:AddMessage(\"\\124cff0070dd\\124Hitem:71716::::::::120:::::\\124h[Soothsayer's Runes]\\124h\\124r\");");
ChatEdit_SendText(ChatFrame2EditBox);
ChatFrame2EditBox:SetText("/script DEFAULT_CHAT_FRAME:AddMessage(\"\\124cff0070dd\\124Hitem:71715::::::::120:::::\\124h[A Treatise on Strategy]\\124h\\124r\");");
ChatEdit_SendText(ChatFrame2EditBox);
end