The 2015 Epic Reads Young Adult Gift Buying Guide. I like how it breaks down these books by genres to give you a better idea what they are about. This could be used for display ideas, and the covers will appeal to the students.
Rainbow Rowell (Landline) & Morgan Matson (Since You've Been Gone) are two of my favorite author discoveries of We Were Liars was good, but hard to get thru. Some of these are on my "to-read" list for the next year!