AAA card (actually in my wallet)
Cell phone
A bunch of quarters
First aid kit
Spare jacket
AMK Heat Sheets
Knife
Flashlight and extra batteries
Jumper cables
Two quarts of oil
Flat head screwdrivers
Phillips head screwdrivers
Pliers
Vise Grips
Adjustable wrench
Tire inflator (such as a Fix-A-Flat)
Tire pressure gauge
Roll of paper towels
Roll of duct tape
Pen and paper
Granola or energy bars
Bottled water
Backpack to carry stuff in case I have to walk

Kevin B.