The Magic Finger - Roald Dahl, Penguin Random House Children's UK

Out the window they flew, far up into the sky, and soon the whole family was flying around and around together. Every Saturday morning the Gregg family goes off to shoot animals and birds. But the girl who lives next door hates hunting.Now it's made her so angry that she's PUT THE MAGIC FINGER ON THEM ALL. And very strange things have begun to happen . .