My car stuff is a little out of hand, but my commute is rather non standard.
Add a Glock shovel, SOL sport utility blanket, jumper cables, and water to yours and call it good.
Oh yeah, and a serpentine belt. Most likely failure item other than tires. Buy 2, change it and keep the other in the car. Or buy one if you are cheap, change it and keep the take off as a get off the road belt.
I think I'll toss in a tarp, or more likely, a moving blanket. They're dirt cheap, and will work as a trunk tarp as well as a normal blanket. Harbor Freight has them pretty cheap. Everything is meant to be practical and to be actually used at some point as opposed to apocalypse or any other unlikely scenario. Hence, no food or whatnot.
Mini shovel is a good idea. During winter, kitty litter.
I have a jump pack. Not sure whether to go with jump pack or jumper cables. It's not a minor choice because both are pretty big. I'm leaning towards jump pack, it includes USB port, a light and air compressor in one package.
Serpentine belt, check. Any thoughts from the hive mind on brand? Have found Dayco, Gates, MasterPro, Daylast, Bando and ContiTech. Or OEM, of course.
I also thought about simple tools. Couple screw drivers, allen wrenches, etc. Not a full tool box, just some basics.
I've actually become a big fan of the lithium jump starters over cables. Keep one in both my vehicles.
I'm very very leery of that because I use a lot of lithium batteries. They have a narrow temperature range for optimal use. Toss your lithium battery in the freezer for 30 minutes and then try to use it. Or leave it outside during winter. Also, if you live in the desert or whatnot, hide it in the coolest part of your car. It probably (not definitely) is enough for a compact car. Larger you get, less likely it is to work. No shot for trunks. Maybe, maybe not for mini vans, SUVs or larger sedans.
Add cash to that list. Maybe loose change, too.
Maybe glow sticks.
Already done. Money and a cell phone are the two more critical emergency tools one can possess
Glow sticks I pondered, but went with LED flashlights instead. Should last longer, more weather independent.