Harry tends to mess up a little. Send him for berries and he comes home with a new pet, send him to sell his favourite cow and he comes home with a pocket of magic beans.
Who knew those things actually worked?
Or, a Jack and the Beanstalk AU featuring Harry as Jack, Louis as a prince, Zayn as a nanny, Liam as the reasonable one, and Niall as whatever the fuck he is.
Also, a giant teacup.