George Whitefiled by Arnold Dallimore. This is what faithfulness in a generation looks like.
The first 3 novels by Kenley Davidson; beautiful fairy tales retold with dynamic wit and plot.
The Bruised Reed by Richard Sibbes (short, but sweet classic book on how God works in our hearts and lives).
Timothy Keller's Making Sense of God: An Invitation to the Skeptical. A book that makes you doubt your doubts.
All Creatures Great and Small by James Harriot. True stories of a early/mid 20th century veterinarian in the Yorkshire Dales of England.
Knowing Christ Today: Why We Can Trust Spiritual Knowledge by Dallas Willard. A reasoned account by a seasoned philosopher on the validity of spiritual truth and knowledge.
The Road to Character by David Brooks. The New York Times editorial writer laces together several sketches of heroes to call forth a new way forward (really the old way) toward greatness.
A reread of What's Best Next: How the Gospel Transforms the Way You Get Things Done by Matt Perman. A theological/practical book on why productivity can glorify God and how to get to it.
Honorable mentions in the realm of fiction: Alice in Wonderland by Lewis Carroll and Elantris by Brandon Sanderson.