Run over to the new Menards, next to St. Joe Harley on South Belt.
They have the small 12 volt refrigerators for $35. Hold about a 6 pack, and heat as well as cool. Now you don't have to thaw water bottles in your coat to get a drink in the winter.

Put common first aid/trauma gear in a lunch box or nylon lunch bag, and keep it within reach, as if you were trapped in the vehicle. Don't lay it on the seat without running a belt or strap/velcro to hold it in place, or it will become a missle in a crash. It's a low key solution to keeping some gear handy, without encouraging thieves.
The more extreme gear and tools go in the trunk, out of sight.
One thing to keep in mind in St. Joe, is apparently maritime salvage laws come into play, because that if you ever do end up in a crash, the towing company and River City's finest will fistfight over tools, money, music, etc., found in crashed vehicles, if the denizens of Blue Town don't find/raid it first.
In bad weather, stay off 36 and 229. The elevated sections and ramps are 3 to 5 stories high, and the first to freeze.

Fill a couple of 2 liter bottles with dri-sweep or cat litter. Sprinkle some on the glazed patches in front and behind your drive wheels to get you going.

If it is really bad out, stay where you are. No job is worth your life. You really don't want the term "tragic accident" and your name used in the same sentence.