Personalized Book Lovers Gifts Unicorn Librarian Youth T-Shirt. Unicorn sits on a stack of colorful books on this gift for a bookworm, librarian, book lover. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.