Necessary things that you need to keep in your car

I was inspired by cobra to make this thread. I thought it might be nice to make a list of essential things everyone should keep in their car. My suggestion would be a small tool kit. I carry a small socket set and a bag with some tools in my daily at all times. It's something I think everyone should have. Craftsman makes a nice set that can fit under most car seats and isn't too pricey l. Here's the link for one that's similar to mine . m.craftsman.com/craftsman-58pc-universal-max-axess-mechanics-tool-set/p-00935430000P What's your suggestion.