3. The water will slowly filter through the charcoal and drip out of the cap. Put a bandanna or another cloth over the hole to filter out any bits of charcoal. (If you’re experiencing intestinal distress—and you very well might be, since your body goes into different kinds of shock in these situations—eat a little bit of the charcoal. It’ll help bind you back up.)
Disclaimer: I haven’t tried this, I don’t think it’s a gimmick, but it’s something that’s on my wishlist to try regardless. Won’t charge much more than a phone, and probably not even that well, but if I have my emergency back up dumb phone on me plus this sucker, I can always call out for help so long as I’ve got the reception to. Even if I forgot to charge my emergency phone. Nice idea.
Regarding the general category of water purification, you have essentially combined reverse osmosis with UV disinfection PLUS the necessity for solar and/or gas generated power. Take away the essential electrical power and you still have to boil your water. If you do the math, you could invest up to $2500 for your version of water purification. That’s a “big ticket” indeed. Once again, there are abundant information sources that provide instruction for long term water purification that cost far less.
In both his book Rawles on Retreats and Relocation and in his survivalist novel, Patriots: A Novel of Survival in the Coming Collapse, Rawles describes in great detail retreat groups "upgrading" brick or other masonry houses with steel reinforced window shutters and doors, excavating anti-vehicular ditches, installing warded gate locks, constructing concertina wire obstacles and fougasses, and setting up listening post/observation posts (LP/OPs.) Rawles is a proponent of including a mantrap foyer at survival retreats, an architectural element that he calls a "crushroom".
There are so many potential disasters that could happen at any moment, and you want to do your best to be prepared for all of them. This list of prepper supplies and gear isn’t meant to cover every single item that you would want to have in these situations (I’m sure blacksmithing equipment would be nice to have but I’m not including that on the list!).
It’s impossible to carry all the food you will need for a week unless you’re eating very high density proteins like nuts. Nuts and dried meat are two of the easiest off-the-cuff meals. Canned food has a lot of water that is wasted during the cooking process. Stay away from heavily flavored or salted nuts. The amount of salt present in the unsalted nut mixes is still sufficient enough to replace electrolytes.