One of my primary methods of being ready for winter driving is something I learned a long time ago: “Dress for the road, not the destination.”
In other words, dress (or at least “have available”) the clothing you will need if you are outside of the vehicle for any length of time, and not just to suit the requirements of the place that you’re going. If you get stuck alongside the road somewhere or run out of fuel or get into an accident and have to leave the vehicle, then you’ll know why that’s good advice. “Dress as if you need to walk to where you’re going.”
Aside from that tidbit, most of my advice is similar to others’:
– ice scrapers (multiple, because they break from time to time) and brushes,
– a flat-bladed shovel with a short handle, suitable for all kinds of digging, snow and ice clearing and breaking, salt and sand spreading, etc.,
– a small container of sand and salt,
– some additional heavy winter and rain clothing,
– a few sets of ZipGripGo strips which I haven’t had occasion to use yet,
– my ‘normal’ emergency pack, including basic first aid supplies, emergency road kit with jumper cables, flares, etc., normal basic tool kit, and some reflective clothing (a vest) that I also use from time to time at work.