Invisible Magic Wand (R): Sequel to Hot Chocolate Underpants (TM)

This year, when Grandpa puts Caspian's special Unbirthday box under his bed, it's empty. Grandpa insists he has given Caspian an Invisible Magic Wand (R). Caspian has to name it before it will work. "Maybe," says Caspian. "Good name," says Grandpa. "Nobody will get suspicious." Caspian's hand tingles.