I will start by apologizing to the above commentors, I just started replying once I read the first few lines of this.
This is a topic/subject that Ive looked into several years ago (2014?), after the events in ATL when folks were stranded in their car's on the highway during a snowstorm for something like 18 hours. I had just gotten my little fiesta and had to go to work on a day they were calling for snow in my area, so I tossed some things in a pack, threw a shovel in the back, and headed out.
Since then Ive changed my 'get home bag' some, adding and removing items. Honestly, I dont carry it daily anylonger, but if bad conditions are possible, it goes in. Along with that shovel (or A shovel).
My pack, a London Bridge Trading pack (look them up, really well made, some of our veterans might be familiar), has quite a bit. I'll leave stuff out, not on purpose, but here's a basic rundown
-Water bottle filled (always keep a filled bottle in my car, at least one, but lets have an additional 20+oz, just in case)
-One MRE - food, toilet paper, something with some flavor to drink
-A Leatherman tool (always at least one in the car, but, again, a backup)
-Mora knife - simple, cheap fixed blade
-Small flashlight with extra batteries
-Water purification tabs
-Silcock key (for opening industrial water sources)
-Small First Aid Kit
-Leather gloves, wool socks, thermal shirt
-Some snacks - trail mix, granola bar
-A small/short book. Short in length, but also small in size to fit, better, in the pack and keep weight down.
-Some paracord, matches, magnifying glass (small), Hot Hands hand warmers, small wool blanket I throw in the car too
Im sure I left stuff out, and I apologize. But it's good to have things and have a BASIC plan in place. Know the roads youre traveling on if you might get stuck, have warming items with you. Most of my life Im no more than 15 miles from home, I work about 15 away. Id hate to walk that far, but, dangit, Im NOT sitting in my car for a full day, either.