i carry a small 3/8 socket set. i have a mechanics choice tool bag like the old time doctors would carry when making house calls. i have a set of wrenches from 1/4" -3/4", a 12" cresent wrench all some of the things that were mentioned to fill it up plus a set of points and a fuel filter along with a timing light. i have it so if i cant deal with it out there on the road with what i got im needing a hook anyway so no need to clutter up the truck. most of all carry a cell phone.