as one of those horribly detestable civilian pilots I have carried in my pocket a particular swiss army knife.
the Tinker with it's phillips head screwdriver instead of the corkscrew.
in fact I'm never without it.
in a pinch it can remove the cowling screws, tighten something I notice creeping loose, sharpen pencils, clean the grease from under my nails, make a hole in the fabric a neat shape for repairs, open paint tins, pick stones out of the tyre grooves, open a can of tuna or salmon, open cans of peaches, peel oranges.
you see the Tinker in my pocket isnt for poncing around like a military guy, the bloody thing is an indispensable tool.
I've noticed too that since my son moved out into his own pad they dont get pinched every few months. :-)
however should I ever find I've misplaced my Tinker I am out immediately to replace it.
how the hell do people live life without a Tinker? damned if I know.