ONE OF THE EASIEST AND MOST COST-EFFECTIVE WAYS TO IMPROVE the performance of your gear is by accessorizing the rig you already own. A set of replacement pickups can breathe new life into a guitar. Add a better bridge and/or perhaps a system to improve intonation, and you could find that your old guitar suddenly sounds and plays better than anything you could go out and buy. Similarly, a fresh set of tubes, a new speaker, or maybe a power attenuator could be all it takes to rekindle that love affair you once had with your amplifier. And who couldn’t use some better cables, a more protective gig bag, or a tuner that can do double duty as a practice aid? The point is that there are all sorts of accessories that can help you play and sound better, inspire you to practice more, or simply make things easier for your life as a gigging musician. Here are some of the coolest products that we’ve come across this year.