It's extremely important that every prepper has a survival checklist so that they know well in advance all of the things that they will need and require should disaster strike. Your prepping checklist should include things like:
Documents: Even when society crumbles you should still have enough documents on you to prove who you are. These include things like a birth certificate,
Food Checklist: When it comes to food make sure that you get items that you can keep for a long time without spoiling. This includes things like bean, dried corn grain, pastas, nuts etc.
Clothes: Make sure to prepare clothes that can keep you warm in even the harshest of environments.
Medications: Be sure to prepare any medications that you need because it can become extremely hard to find in a survival situation.