Um...not much! Really! I mean you could go and shop duty free in Tom Bradley International terminal, but honestly with 10 hours up your sleeve, why not go outside the airport? I would suggest asking the nearest 'sky-cap' where the closest lugguage lockers are, then grab transport to Manhattan Beech.....enjoy the true californian atmosphere, with plenty of cafe's and things to do, or then depending your your loose change, take a ride around Hollywood......the options are endless.