I have several headtorches for work, so they get recharged pretty often. Sometimes using the 2 powerbanks, but no means of recharging otherwise if the power goes off. ( Ah! Just remembered - per Hurricane Sandy folk, I can recharge using my diesel van ciggy lighter, usually plenty of fuel). Yes, have been meaning to look out the Tilly, if just for fun, but generally I'm not fussed about a lack of light.
I have a Grayl with a new filter, but the filters have a pretty limited life. A homemade milton bag and boil it or tabs is my emergency fallback. (Happened once in London, Crypto something pathogens in the mains).
Last year I made some beds, plus greenhouse in the garden, managed some toms and runner beans, and a few beetroot. Beetroot are very hardy and made it right thru the winter- the leaves are edible too - easier to grow than sugar beet. Two apple and pear triples trees planted last year, might get a small crop this year. Carrots, pak choi, kale, broccoli, courgettes, all failed miserably.