Essential Tools or I sure wish I had brought............

I carry a set of SAE and metric sockets and racket,assorted wrenches and modified wrenches to get to toilet valve, WH drain,etc, grease gun, caulking gun,ladder, 40 amp battery charger, jumper cables,wire splices, extra wire, tire repair kit and 12 v air pump, sockets and breaker bar to change a tire, oil change pan, rags, 2 multi meters, distilled water for batteries, Shoe Goo, epoxy and contact adhesive,and a tire gauge. My friend whom I travel with at times just carries a credit card due to physical limitations.