Books
Everything You Ever Really Needed to Know About Personal Finance on Just One Page, by Trent Hamm of The Simple Dollar, very practical advice for for becoming financially independent
The Art of War, by Sun Tsu, simple truths, guidelines and wisdom
The Law of Success in Sixteen Lessons, by Napoleon Hill (1928)
Amusements in Mathematics, by Henry Ernest Dudeney, tons of fun for all the nerds in the crowd
The How and Tao of Old Time Banjo, by Joseph Patrick Costello, I need to blow the dust off my old 5-string
The Abolition of Man, by C.S. Lewis
The Chronicles of Narnia, by C.S. Lewis