Have enough on hand for five days for each person. This will be essential in recovering lost property. Consider video taping or taking photos of each room as proof of your losses. However, many sporting goods, hunting and survival stores offer pre-packaged foods that are excellent for this purpose as well. They can be stored indefinitely without any special handling requirements.
Soft drinks have virtually unlimited shelf lives.
Canned milk has limited shelf life listed on the can. Powdered milk or juices have unlimited shelf lives but require much water. If you have an infant, don't forget to set aside enough non-refrigerated formula and baby food in jars.