Yup, I'm the one with extra cables, power cables, strings, pliers, batteries, etc. Anything that can be fixed on the fly.It's real easy to buy a backup instrument cable, speaker cable, and generic power cable and leave them in an "emergency bag" tucked in the corner of your trunk. Mine also has a set of guitar strings and a drum key and a mic cable because even tho I don't use those things myself, I'd rather save someone else's bacon than deal with panicky bandmates.