
The 24 string guitar - because you can't have too many strings, right? This was actually a trend at NAMM, with quite a few companies showing guitars with extra strings.
The accordion controller - because accordions are just so cool.
The lightshow PA speaker - Most Chinese companies showed products like this. I guess it keeps you from getting bored at the show.
The lightshow PA speaker with crystal ball - Let's tell some fortunes during Karaoke this evening.
The Shure Electrostatic Ear Buds - I listened, but they just weren't $2,500 better than what came with my iPhone. Oh, and you need the special $1,000 amp to drive them.
The Stomplight - because floor lighting makes you look so amazing.
The traffic cop controller - You can go direct traffic after the gig.
The wearable metronome - It's so large that you may not be able to hold your arm up to see it.

The multi-switch guitar - For those guitar players who have an extra $6k and are truly bored on stage, here are many more controls to play with.

The plastic mixer cover - Protect your mixer when those bar fights break out and the suds are flowing everywhere.