Santa’s Marvellous Mechanical Workshop by Vashti Hardy

It’s Christmas Eve at Lily’s new house, but Lily misses the old one. Then, in a moment of magic, she is whisked away to the North Pole! Santa’s elfbots need her help to invent new toys from used, discarded ones. Lily comes to learn that with a dash of imagination, she can make anything – even, perhaps, a new home…