A quick guide to help players know which gift should be given to which character. Gifts in bold are quest-related gifts which trigger a cutscene, interaction between the characters, and sometimes a personal quest.
I won't go into much detail, this is essentially a much more convenient way of knowing which character should be given certain gifts when you find them. Just check here, use CTRL + F if you need help finding the item, and you're good to go.

These gifts don't have a specific character who prefers them. They can be given to anyone.