The first rule of winter is always be safe. If you cancel shops, just trust that it's better to be alive and warm than stress those few extra bucks... But a few of us are going to be the winter warriors and here's my list of survival gear I have in my car for winter. This sounds like a lot of stuff, but honestly you can get small versions that will take up the minimalist of spaces... plus many mystery shops require us to go alone so we usually have some space
I have a back storage under my mat and a large cooler tote too.
A couple of thick quilts--not the bed in a bag special, but of course pack what you have! Every little bit helps.
A pack of flares--you never know! You can also get glow sticks for under $10.
A pack of foil blankets-- $10 for a 4 pack of "nasa" thermal blankets
A couple of 2x6 pieces to put under my tires for extra traction in case I go down into a ditch and need a little help. Pop them under your tires to help avoid the mud slinging.
A back of rock salt--never know when the extra help may come in handy.
Extra socks, gloves, hats and a pair of waterproof boots. I wear sneakers in the car but keep the boots handy.
A cooler with some water and snacks inside. Helps keep things from freezing if you break down.
A flash light.
Ice scraper and car brush. Extra washer fluid.
Matches, lighters, fire sources.
Charger for your phone! Also a watch-- phone batteries die
I also have a hand held radio but my guy and I have a HAM license.
Jumper cables, flat tire kit--jack, wrench, spare, and possible a portable air compressor.
A back pack! You may have to pack up and hoof it.
a small first aid kit.
This sounds like a lot, even by winter warrior standards but most of it can be compacted down to take up minimal space. Be safe out there and be prepared (: