It is really important to know what all you actually need to prepare yourself and your family for an emergency. The first and foremost thing is the first aid kit. It is really important to store your firstaid supplies in a sturdy box or nylon case. But the point to remember is that, the case should be easy to carry and water proof. It is better to keep all the important medicines in your case and also make sure they are not expired.
Humanity, during a time of crisis, splits into moral pieces. Those who care about others will, like you said, show their best…Then there is the other side, the selfish, there will be those that will walk by and leave someone in need or take from someone to benefit themselves. Survival instincts makes us think isolation is the safest way, but that is only short term, humans are a social creature and we work better and create things better in social groups. Humanity, as a whole, will overcome the SHTF event by coming together and working towards a common problem. I think out of initial fear most will keep to themselves but eventually they will need to overcome their fears and regroup to bring back what was lost.
Every survival kit and emergency preparedness plan should include emergency blankets and lights. Mylar blankets effectively reflect body heat, and can keep you warm throughout a cold night. Their extreme lightweight and compact size make them an ideal part of a survival kit. To ensure you have adequate light in the event of a power failure, chemical snap lights are a convenient solution that doesn’t rely on batteries. Many snap lights last for 12 hours or more, and have a five year shelf life, so you know they’ll be there for you when you need them. 
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