Answer: doggybag

AnswerCrossword Clue
DOGGYBAGSource of tomorrow's lunch, perhaps
DOGGYBAGRestaurant after-dinner convenience
DOGGYBAGTakeout request?
DOGGYBAGStuffed diner's request
DOGGYBAGRestaurant take-home holder
DOGGYBAGSomething you have filled when full
DOGGYBAGIt wraps scraps