i have a Honda 2000 genny that I converted to run on LP for that very reason; to not have to worry about the gas going bad and keeping extra gas (and rotating that in and out). bought a kit online and it was fairly simple to do.
I got a 100lb LP tank that I can hook up to it to run for longer spells. I normally break it out every 3 months or so and fire it up and check the oil. Need to put a gauge on the tank next time i fill it though. it's hard to lift and shake to get an idea of what's left.
biggest 'to-do' for us would be to try and insulate our 100 yo house much much better. After turning off the gas fire place overnight, the bottom floor dropped to 47F with power on the morning it got down to -2F.
Those freeze miser spigot things are cool. may try those as I was team drip.
I got one of those huge Lithium batteries ~5years ago. Those are great for keeping phones, tablets and even running a lamp, laptop, speaker for hours. amazon no longer has the page, but it looks like this
about the size of a six pack of cans.
keep some of those shark bite pipe fittings on hand
also some spare parts for the gas fireplace. not sure what it is called, but the flared aluminum pipe that carries gas from the outlet to the manifold broke the first night. I dug through the garage and found the old setup from a previous house that we saved. Did not have a torch so used our gas stove to heat up and bend the pipe to fit. so maybe throw in a little propane torch for good measure. that would be good for thawing pipes as well.