As the title says really, Ds1 15yrs old had decided he wants a packed lunch from now on 
Hes a tall, (6'2') very slim, very active which is just as well as he would eat rubbish all day, think sweets, crisps and energy drinks if he thought he could get away with it.
When at home eats for England..
He has breakfast at 7.30, and then lunch at school isnt till 1.30!!
So idealy needs something at breaktime also to keep him going till lunch time.
So if any one can give me any ideas on what is an acceptable packed lunch for a 15yr old, I would be grateful 