Edith Nesbit 
Five Children and It Level 2 Oxford Bookworms Library [EPUB ebook] 

A level 2 Oxford Bookworms Library graded reader. Retold for Learners of English by Diane Mowat. When the children dug a hole in the gravel-pit, they were very surprised at what they found. ‘It’ was a Psammead, a sand-fairy, thousands of years old. It was a strange little thing — fat and furry, and with eyes on long stalks. It was often very cross and unfriendly, but it could give wishes — one wish a day. ‘How wonderful!’ the children said. But wishes are difficult things. They can get you into trouble . . .