When storing food I found that if you leave it in the original container bad stuff can happen to it. The original containers or bags are weak, tear easily, non resealable and let stuff in and out. Some times the bags something comes in doesn't even survive the cart ride from the shelf to the checkout or from the checkout to home. To prevent this I started putting stores that will easily fit in a 2L bottle. Things like sugar, salt, rice, beans, hot cholate powder, drink mix, flower, whey protein isolate powder, dry potato flakes, instant corn bread or muffin/pancake mix. Maybe a few more. Because the 2L bottles are air tight, pretty tough, water proof, pests like mice tend to ignore whats in the 2L bottle and bugs can not penetrate it, the containers are free, food grade and can be reused to hold water when empty of food. Scenarios I can think of where it might come in handy are if it was pouring rain and you have to get out of town fast. Or if you only have time to just grab everything and throw it in the back of a pickup and at least you wont have to worry about the food getting wet or delicate bags getting torn.