Billy has a shovel, several spare sets of robes, pictures of the Millennial King and the Empress of the Dawn, a pile of rusty jewelry, a spider doll, a Big spider that hasn't transformed back, Several tomes, and Gob.
Also, he can speak with the dead, has almost unlimited stamina, a surprising amount of martial prowess when wielding books, and may just spontaneously get back up if he dies to continue the game as a walking corpse.
I'm only half joking about the last one. It may happen.
Hey son, wanna' learn how ta' make witch balls?