[JWheaton]

Sun Screen
Sun Glasses
1 change of underwear (that should do for 5 days)
Burn kit
Wrench
Screw driver
Knife
Don't worry about a cover...the car won't melt if it gets wet
Towel to dry seats
Duct tape -- You can do a lot with the stuff
deodorant
cologne -- if you really get smelly
Tissues / TP