Sophie will spend it on a boob job. She already said that she wants them bigger but doctors here are reluctant. With the cash she could go to the states and get them done.
Siavash probably would go on a shopping spree for clothes.
Charlie would do his bike trip around the world so that his mum might remember him from postcards that he sends.
Rodrigo would bring his family over.
Marcus would blow it all on action figures and duvets.
David could do his own gay mardigras.
Lisa would slowly smoke her way through it. Then after it was all gone she'd pop down the DHSS and sign on again.