Now that I'm doing filter changes, I've had a couple "need one tool that is in the van" moments. I'm making a small tool bag with shoulder strap, that should go to the roof with me, even if all I'm doing is changing filters.
What to put in the bag? At the moment, I've got the following list: (pocket tools) Cell phone Leatherman Utility knife Thermostat Screwdriver Cheap IR thermometer
(roof bag)
10-way screw driver and nut driver Crescent Wrench Socket set with only common sizes 50 feet parachute cord Electrical tape Duct tape Coat hanger Cheap VOMThe goal of the roof bag is to be light weight, and just the essential tools that get used all the time. Ideally, I'll always have a helper, and can rope up any other tools.
What other tools are essential, and often used?