I have one better than that. When I was building my convertible I misplaced my pocket tape measure. 3 or 4 years ago I was doing some work under the hood of the car and was at the back of the engine doing something and lo and behold there was my pocket tape on the engine block at the rear behind the intake. There was over 12,000 miles on the car then. I can't believe it stayed there all that time.