Quickwhiz (Emergency radiator sealant)
Tow rope, Jump leads, Old v belts (Generator, Water body) etc. I always carry the old ones because they always fit.
Few Fuses, Bolts from 10mm to 14mm, RoboGrip, FACOM screw drivers, Almost all spanners upto 22mm, Brake oil and a separate brake line(learned from my experience its very necessary). two or three wheel nuts(in-case they slip), Small Fire extinguisher, a baseball bat and a 7.62mm with 200 rounds.