Justine Flynn 
Miss Mae’s Saturday [EPUB ebook] 

Is anything as sad and boring as being stuck inside on a rainy Saturday? It depends on your imagination…Miss Mae goes on marvellous adventures with her grandmother. But this week a storm is keeping them stuck indoors. Mae is terribly disappointed. That is, until Grandma produces a giant cardboard box and promises Mae the most exciting adventure she’s ever had. All Mae needs is a little imagination.