While many of the products are fresh in the day-to-day sense, they do not include very short-life perishables or chilled goods.
Except of course food and other perishables, which are often bad purely as a consequence of being old.
As with the first tip, purchase perishables that you need or you can use before the food will spoil.
In some areas, recycling is as easy as separating recyclables from perishables.
Refrigerator: Typically a small dorm room sized fridge is available that will hold a small amount of perishables.