Besides a 72 hour kit, there are alot of little things we can all do around the house to help us for the times we lose power or water. Most of it is common sense and I'm sure you already know.
So we are assuming we already have shelter so we just need food, water and light.
I also have two oil lamps -- which I need more fuel for this year. I picked them up at antique malls but you can buy cheap ones at most all purpose stores. These are my favorite light sources as they give a nice glow and I don't have to worry about battery power. As long as I have fuel, we are fine. They do not consume the fuel very quickly. We also have replacement wicks.
Our camping lanterns have an indoor storage spot since we use them any time we lose the lights also. Usually we get them out but don't actually use them. But, if the house was compromised or we needed to take light outside, these are what you need - not a flame.
Do you have a chest freezer? If you are lucky enough to own one you have more water storage at hand. See, a chest freezer works better when its full. Its uses less energy that way. So, if you are like we are at the time, your chest freezer is half empty. Since we don't know when orders will drop, we don't want to keep it full. I can combat that problem by filling the freezer with....
Food and cooking is where it can get tricky. We have a gas grill and a smoker and a bunch of wood. We keep an extra full bottle of propane for the grill so at any given time we have a minimum of one full bottle. One of the next things on my list is a fire pit as I can cook over it. We already have wood, and in the area we are in we can glean more if necessary. We have a wagon and a wheelbarrow we can use to gather should we need them. We also have one burner we can use in the camping gear....but I just got rid of the two butane stoves as we want to update to the newer propane ones (or do I have that backwards?). So right now I do not have a camp stove. But again, if we did have them and ran out of fuel, they would be useless. What I need is a place I can have a wood fire. One day when we have a permanent place of our own I would like a new wood burning stove inside and a fire ring/pit outside.
All these precautions, coupled with our camping gear should keep us comfortable should we experience a time of no electricity and limited mobility. Assuming there is no house damage, the pantry is usually stocked...although not with enough to hold us over long -- we just don't have the room at the moment.
So tell me what you do different. Is there something I could add?