I tend to bring the stuff to make or repair vs whole replacements.
Parts:
2 - 2 pole speakon
2 - 4 pole speakon
2ea - mono 1/4" & 1/8"
1 - megafoot 1/4"
2ea - stereo 1/4" & 1/8"
2 - xlr male
2 - xlr female
5 - 5.5mm DC power male connector
2 - 5.5mm DC power female
6' 12gax2 speaker wire
12' 22gax3 mic wire
5' silk covered 18ga wire (for inside instruments and amps)
2ea - 2a, 5a, 10a, 15a fuses
2 - 500kohm pots
2 - 25kohm pots
1 - long sleeve 1/4" stereo jack
1 - short standard 1/4" stereo jack
1 - 1' IEC to NEMA 5-15 (turns any IEC power cord (your computer has this normally) into an extension cord)
various washers, pot/jack nuts, screws, jack boots, solder, and heatshrink tubing.
Tools:
1 - customized 35w adjustable temp soldering iron (has two 35w elements in it with a thermal breaker set at 425F for one of them, heats up to temp in about 1 minute)
1 - plunger desolderer
1 - bic lighter
1 - diagonal cutters
1 - mini needle-nose
1 - 6in1 screwdriver
1ea - .5, .75, 1, 1.5, 2, 2.5, 3, 4, 5mm hex wrenches
1ea - 1/8", 1/4", 1/2" drillbit
1 - chuck from a cordless drill that fits into the socket of the 6in1 screwdriver
1 - led flashlight
Fits in a 16"x10"x5" bag which is velcro'ed to the back lid of my rack.
I like to keep enough on hand to fix any broken cable, guitar, or amp the band I'm playing with might have. I leave it up to the guitarists to carry backup tubes.
I'm pretty handy with a soldering iron so most repairs take less than 2 minutes including warmup of the iron. Yes its much more intensive than just throwing a new cable at someone. But you end up just resoldering most of the time so its extremely cheap compared to any other method.
Bass only stuff:
2 sets of strings.. usually 1 new and the last whole set I took off. (I use the old strings to replace the broken single string during the set and replace all the strings next break).
2 monster bass cables
1 up machine head
1 down machine head
People stuff:
1 pack of baby wipes (for the hands before, during, and hands/cables after playing)
1 bottle of purex (for after coiling up cables)
yes thats nutty... but so is touching anything that fell or was placed onto a bar floor
