Are you aware that you may be forced to use chains getting to some destinations? Here are some items worth having in your vehicle for your winter adventures:
Snow chains (yes, worth buying and start at around $35);
Oil absorbent or kitty litter (for traction);
Blankets and/or extra warm clothing (in case you have to wait for help);
Ice scraper/brush (you may need to dig out the car after your adventure!);
Signal flares or flashlight (should be in your 10 essentials anyway!);