Make sure you rinse the bottom of your truck frequently and maybe undercoat Epic, they salt the LIVING CRAP out of the roads up there.
Let's see, in my upper glovebox I have 7 mil Hardy nitrile gloves from Harbor Freight. I absolutely LOVE those. Great for all tasks, especially working on vehicles, and they are right there. Plus as relatively inexpensive as they are I have no issue burning through a box of em.
Lower glovebox has the owner's manual, my factory headlights, factory valve stem caps, bed hole plugs, Chevy Trucks umbrella from my Dad's old Suburban roadside kit, and a couple microfiber cloths for cleaning screens.
Center console has the Chevy organizer, which has a full coin organizer, manual dial tire pressure gauge, small Chevy Trucks flashlight, Chevy knife, and a Chevy multi tool (I love Chevy Mall and Chevy Norscot). I also have the key for my hitch receiver lock. That flashlight gets tons of mileage, great for quick looks and inspection. In the front pocket I have 3 Chevy pens, a little Chevy notepad book, and a factory Microsoft charger for my Lumia 640. On the file folder hooks I have three folders. The front folder has my proof of insurance and current registration. The second folder has my window sticker and the RPO printout detailing installed options on my truck. The rear folder has the current year's paperwork related to service information, such as parts invoices and service receipts. On the bottom I have a roll of heavy duty shop towels, a new Chevy first aid kit, an older Chevy Trucks first aid kit (with newer stuff inside) from the Suburban kit, a reconfigurable Chevy Trucks flashlight/lantern, a Chevy power bank with usb cable, and all the albums of my favorite band. Gotta have tunes.
One of my most favorite things I pack along, found in the center console, is Fast Orange wipes. Smooth on one side, scrubbers on the other, these things are GREAT. Amazing way to clean your hands, surfaces, etc etc etc. A fantastic way to clean up on the go. Highly highly highly highly highly recommend.
In the lower pocket on the back of the console I have a Chevy Trucks 100 years COB light, that bad boy is BRIGHT and fantastic for detailed inspections. I also have a couple of Chevy ice scrapers. Those work well, and since I have a garage at home and a parking garage at work, so a brush is not necessary in my eyes.
In the left seatback pocket I have old service paperwork and my log for even years, and the odd years go in the right seatback pocket. That way I have a hard copy for reference and I know where they're at.
Last fall I broke down and snagged a GM underseat storage bin. I was piling up accesories (and then had an excuse to get more ), it fits the best of the options out there, and it works with my floor liners. I cut a section out on the left side to fit my roadside kit, but otherwise it fits well.
On the right side I have a Curt 10k lb hitch ball mount with a 10k ball in a Chevy Silverado bag, 4 Curt 733 lb blue ratchet straps in a Chevy Silverado bag, and a Curt 9k LB GVW (18k lb break strength) tow strap in a Chevy Trucks bag. With the bags they provide the opportunity to keep stuff clean, and they are licensed too. I'm a sucker for that. The center section has my trusty Chevy sunshade, the fancy thick one. The left side has a Chevy water bottle, fast funnels (https://fastfunnel.com/index.html), a blue Chevy blanket, and my Chevy roadside kit (the fancy one with the bowtie).
The roadside kit has 6 gauge jumper cables, a hand powered flashlight, grippy gloves, silver duct tape, a couple of bungee cords, zip ties, a 4 way screwdriver, and a pair of pliers. I've added leather Chevy Silverado work gloves, a locking Craftsman crescent wrench, a 24 bit Craftsman ratcheting screwdriver, a medium size pair of Craftsman adjustable pliers, and a roll of the narrow Gorilla tape.
Sorry to go bonkers, I'm kinda pleased with the lot of stuff I've organized and haven't really shared my full list of stuff.