Howz about some Beef Jerky and a couple of energy bars (with a good shelf life)?

It would never hurt to have a bit of comfort:)

I also like head lights, the type bicycle drivers use.
It assists in walking at night, and makes it easier for one to be seen by vehicles and snow removal folks.

I suspect there is some reflective material that could likely be attached to your arms or clothes, if you need to get out of your car.