Board Thread:Current Major Glitch Discussion/@comment-29326205-20180323231023/@comment-33231837-20180327191500

Elf: One-off items are just that - they do not belong to any collection, they only exist to fulfill a quest.

The only way to get them is to follow the request as to where to find it (but the smart thing to do is to get the picture to the required mode then leave it alone for a day or so before proceeding).