What about X?

"All the letters of the alphabet know exactly what to pack for their big camping trip. B is bringing binoculars. C is collecting canteens. G is grabbing graham crackers for making s'mores. But X can't think of a thing to bring! How can he get on the bus if he has nothing to share? In her picture book debut, author Anne Marie Houppert combines the excitement of a first field trip with the magic of collaboration and friendship. Illustrator Daniel Wiseman paints maximum personality into each character, underlining the idea that everyone is special and necessary-just like every letter of the alphabet!"--.