The general book of ignorance ~ everything you think you know is wrong.
The Chronicles of Narnia. All seven books! If you’re buying just one, probably “The Magician’s Nephew.”
The Art of Demotivation it’ll come in handy as they enter the business world ;)
Guy? Girl? Interests?
Although it is trendy, I think Randy Pausch’s The Last Lecture has a lot to say for someone at the rite of passage into adulthood.
“Idiot’s Guide to the Real Word” or…
“Mangaging Debt 101”.
I think something about investing for retirement might be useful.
Sophie’s World
The Last Lecture by Pausch. Aptly titled, and good lessons for navigating the real world.
The 4-Hour Workweek by Timothy Ferriss.
Challenging and inspiring. A life-changer.
I recomend “the cay” by theadore taylor :)