The big Halfords 200 piece toolkit that they regularly discount to £100. Every socket, spanner and allen key you might need. And - wire cutters, a length of strong wire, duct tape and that self amalgamating stuff.
I've got the 155 out of a pickle with that lot - duff plug on the fuel pump. I've also got the Dogwagon going again - it blew a coolant hose off, an easy fix once you've got the battery out, but you won't be getting the battery out without a socket set.
Other than that, a credit card. Solves pretty much every problem.
Last edited by rxe; 03-07-17 at 18:08.