IMO this is a must along with a plug kit. A quality one that won't overheat and take a shit on you:
https://www.amazon.com/dp/B07MMGLNHC/ref=nav_timeline_asin?_encoding=UTF8&psc=1
This shit I carry all the time, fits in 2 milk crates behind rear seat and glove box/under pass/2nd row seats:
Jug of Oil
Jug of A/F
Jug of washer fluid
Run of the mill 100 pc or so tool kit that has pliers and cutters etc
Bag of zip ties
Rags
Blanket
WD-40
Funnel
Tie wire
Flashlight
Heavy pocket knife
Spare bulbs, fuses
Tire pressure gauge
Trim tools
Tow strap with hooks
Heavy, quality jumper cables
Probably a couple other things I am forgetting
I also keep a barbed heater hose connector in one of the heater lines with extra spring clamps on it in case one breaks I can just cut it and connect it into a bypass mode. I don't keep tape in there it seems to melt and get all ****** after a while.