Personalized Imagination Is Magical Youth T-Shirt. With a little bit of imagination, you can be or do anything you wish. Imagination Is Magical Youth T-Shirt - Vintage Hot Pink, featuring Bob from the children's book "Bob is a Unicorn" by Michelle Nelson-Schmidt. 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.