Clubs have finished for the term, but here's a little quickie to lead up to Easter.
Ask the children to draw a really ugly dog. They must make it incredibly ugly - in fact it should be the ugliest dog in the world. They can label their picture if they like.
Then ask them: what is the dog's name? Where does it live? What does it eat? What is its worst habit? What kind of problems does it cause for the people around it? Does it have any friends? What does it smell of? Is it at all lovable, or is it entirely rubbish? Does it deserve a happy ending?
Then they can write their stories, or tell them off the cuff.