You are the kind of person to not only have a car survival kit, but to make a video about it, and you DONT care for multitools? I am so confused right now lol
Little terry cloth towels (painters in box store) Just to clean your face and hands and you can throw away if too messy. Having tire pump, inverters and such is great, but do they work? Test them in caser. Get a back packing stove with fuel blocks (cheap) and a metal camp cup. Get some coffee, tea, chocolate for a drink as well as electrolyte packs. Tools get a crimper to attach wires with connector and a little wire.
They work great! I probably use them 1x a month at least - good idea on a little more in-depth electrical kit! Going to put a video out on my winter kit soon, thanks!