After the powers out, theres only one way to preserve food right now, and thats canning/jarring however the simpler method in real life would be just drying or smoking which could be easily implimented by having a 'craftable' stove that requires heat and instead of rotting adding the line (i suck at coding so I'm just stating it) and "if in smoker, replace item with instead of 'rotten' item, to dried item' That way it will require time to dry and in the future, coded to require a heat source to function as a temporary solution to food storage. As for lighting, finding some kind of electronic part that can be used to craft solar lights. I wouldn't mind lighting in my safe house but if I forget to turn it off, the limited batteries available are gone. Just tossin this out there.