E. Nesbit 
Five Children and It [EPUB ebook] 

When Cyril, Robert, Anthea, Jane and Lamb move from the bright lights of London to the quiet countryside, there is little to do to amuse themselves. However one day while playing in the gravel-pit, they uncover a grumpy sand-fairy called The Psammead. The Psammead has the power to grant wishes, but having been buried for so long- things tend to go awry with disastrous and often hilarious consequences. Join the Five Children and It on this classic tale of family, friendship and magical adventure.