Affection items with fixed rate > No matter what type of presents the girl likes this will raise her affection by a fixed rate.
Its pretty much the same as what the affection items you get for completing missions do.
You can also create these in the crafting menu, but after debating with the other guys, we came to a conclusion that its not really worth it, since you get so many gift items on DMM that its redundant to specifically craft these.