[masraum]

Jumper cables, really good ones. I've seen the really cheap small wire gauge models not do the trick. Make sure they have the stuff to change a tire and a cell phone. That's it.

I guess depending upon the individual and the vehicle, the stuff to change the belt, and the tools to change the battery might be an option. But normally, before they are doing anything other than jumping the car or changing the tire, I would want to look at the car anyway.