Cold weather preparedness.

This is the thing though isn't it being nowhere near as far north as you I don't tend to have the serious temperature drops you do. Mostly I might have a handful of weeks a year that are significantly below zero or indeed any meaningful depth of snow. It's just that working out side I have it to deal with however foul it is.

I carry much of that list all year round, it just lives in the car.

You can always take your lithium jump starter inside at night, together with your can of de-icer, that way they are both warm and ready for action.

Another addition is a hand spray bottle of warm water or even screen wash, then when the washer jets freeze up you can wind the window down and reach round to help keep the screen clean.

I have a CTEK MXS 5.0 and that can be left on overnight, or even permanently. As well as maintaining charge, you get the benefit of a warm battery, so no drop in power due to a cold battery.

Roger

I got a Ctek too, not sure what the size or model was, but was planning to add it to the 230V setup for the heater connections. Have not had the need though after installing 70Ah AGM..but i do have a Ctek connnection installed for easy hookup.

Haven't seen the practical use for the spray to de-ice yet. Some of those products might work any brands that you got good experience with? Most stop working around minus ten i think. but then i do keep the car inside at home and plugged in at work.
Also beware the store bought washer fluids, cheap ones work at minus 10 but 15 and lower some freeze up on the windscreen.

ahh and another tip for driving in drifts and windy snow, keep your screen cold to avoid ice build up on the windscreen and wipers. Adjust the heater to feet or face. seldom a problem on the suzuki though as the windscreen heater is not so powerful
Or in temperature around zero, wiggle the wiper switch so the wipers stop 5cm or so up on the windscreen where the heater can melt the ice. Will not work at ten and below though.

LED lights here should be of the heated sorts or they clog up and freeze on the front. or like me better just keep the old halogen that melts on coming snow.

over the weekend now C 4+ and all will be forgotten until the next cold period....

I see you've not got on your list some food and drink? maybe cereal bars or something.

What about a camping stove or something for hot drinks? Never know how long you're going to be stuck 

I made a washer fluid heater that is spliced into the heater hose. Works well.

Roger