Water. For thirst
Blankets. In addition to staying hydrated, you'll need to stay warm.
Flashlights and Flares. Flashlights will come in handy if winter weather causes a power outage.
Shovel. ...
Power Source.
Food. For hunger.
Tools and Supplies. Ice scraper and snow brush.
First Aid Kit.
Explanation: I didn’t put an explanation for some of the obvious ones :)