Lunch containers are a great way to store food and keep it fresh. The most common lunch containers are a BAG, PAIL, and brownbag. A BAG is a three letter word used to store items and is usually made of cloth or plastic. A PAIL is a four letter word that is typically used to store liquids and is usually made of metal or plastic. A brownbag is an eight letter word that is commonly used to store food and is usually made of paper.