I would use it to invent and build a time-machine so that I could go back in time and bone the f*ck out of Terri Hatcher circa 'the new adventures of superman'.
Alternatively I would use it to buy myself tenure in a merchant bank where I would proceed to be payed ridiculous sums of money for sitting at my desk shouting 'buy buy buy' into a toy phone while my co-workers ran about like scalded cats attempting to avoid having my bone-headed mis-management send the UK economy into a major recession.