# 10. 9-volt batteries
There are many brands of these kinds of batteries. It’s on your preference on which one to choose. For economy-wise, you may want to invest on a rechargeable one with tough chargers this way you won’t have to worry about forgetting to buy a new one on the road. You just have to plug in your charger backstage or wherever you’ll find a power outlet.
Batteries are the lifeblood of Effects Pedal, tuners, and active system guitars.
#9 – Flashlight –This may be a bizarre tool for guitarists but very useful. In case you dropped something inside your guitar while replacing the battery or a pick behind the speakers (this may not sound normal but will happen), you have a handy flashlight that will save the day.
#8 – Extra Strings – is already is a must-have for every guitarist. This won’t even need to be mentioned but very essential in going out for a tour or performance. Most common strings to take are the smaller ones. #0, #1, #2, and sometimes #3 but not often; the larger ones are not common to break but sure a good thing to have backups as well.