Nice thread.
I keep two separate bags in my jeep, one is a little one that I got from somewhere, I dumped the bandaids in it, and made it my "basic kit".
It has:
Germ-x
lotion
neosporin spray
tweezers (pointy and flat tip)
finger nail clippers
~20 anti-bacterial cleaning towelettes
Sting and bite pad/ointment
antiseptic gel
whistle
bandaid assortment
chap stick
medical tape
2x2 gauze pads, and 4"x 4 yards roll of gauze bandage
Ace bandage
Wet Ones antibacterial wipes
Ibuprofen tabs
Other one is the larger bag that came with my Trek Armor seat covers, and it handles a bit more. I have a lot of the bandages/tapes/etc in a small "ditty bag" I grabbed from Walmart with 3 separate pockets to keep things a bit more organized, and some of the large stuff goes to the side of the ditty bag in the Trek armor bag. I also wanted the Quick Clot , Olaes bandage, and shears to not be hard to get to and use, so those are just in the big bag, not the smaller ditty bag.
EMT shears
triangle bandages
larger gauze pads, up to 4"x4"
absorbent gauze pads
clear wound dressings
hypoalergenic adhesive wound dressings
smaller wound dressings
isopropril alcohol swabs
small roll duct tape
more "medical tape"
additional Ace bandages
Olaes modular bandage:
https://www.youtube.com/watch?v=YbKDNuLB54A
sterile nitrile gloves, with disposal bag
purified water pipettes for irrigation.
25 and 50g quick clot sponges.
Need to get a tourniquet, snake bite kit, and a burn kit too.
I have a pretty good selection of wound dressings, bandages, cleaning swabs, etc due to my wifes job, which deals in medical supplies. Its no Morphine shot and IV setup, but the idea was I would be more prepared than the average car first aid kit for normal stuff, up to some basic gun shot wound care, based on the hobbies I am around or participate in.
As to other stuff, I keep sunscreen (cause of the wife), pen, sharpie, Surefire light, lighter, and a spare pocket knife in the car as well.