Spare bulbs
fuses
wiper blades
make sure spare is good
jumper cables
I also have jumper box
coolant
washer fluid
brake fluid
quart of oil
tranny fluid funnel
blanket, and warm change of clother for each person.Gloves, chapstick & sunscren
piece of rug to fit under 2 wheels in case you get stuck in mud or snow
cell phone with charger and extra battery
$50 cash stashed away
AAA membership
map
wet wipes
rags
decent tool kit enough to do most common roadside repairs
check you tires, belts, hoses, brake pads & lines, bulbs, wipers, horn, plug wires, plugs,cap & rotor, axle boots. steering boots, heater hoses, prob replace thermostat, timing belt if not done recently. depending on mileage & if tranny serviced regularly a fluid flush. Know how to open gas tank door if it gets stuck. If you have replaced tranny micowswitch, PNP switch & timing belt, no need to worry about them unless you are getting codes. Get a charging system check to test alternator & battery.fuel filter, air filter & oil change not a bad a idea. You can do mosty of these service items for less than $200. parts only. check out volvospeed.com repair section bay 13 for repair info