Christmas gifts 7 year old boy and 14 year old girl (Marston OX3)

I am supporting a family who are going through a hard time at the moment. I am trying to source some gifts for them for Christmas: the boy is 7, into Sonic the Hedgehog, Marvel as well as books, games etc. The girl is just 14 and is into make up, perfume, hair stuff etc. If you have anything you do not need, it would be gratefully received! Thanks