If Guitar Hero had existed 25 years ago, the peripherals built to play it probably would have looked a lot like the NES Paul. The NES Paul is a guitar-shaped NES controller designed by modder Techni Myoko.
Myoko actually designed the NES Paul for use with her custom-built computer game 8-Bit Hero. Even though I am a huge fan of modern-day gaming machines, I still have a soft spot in my heart for cool retro works like this. If I had a hat, it'd be off to you Techni Myoko.