Father and son Richard and Steve Doner make custom electric guitars, such as this bass inspired by Back to the Future. Like Doc Brown's DeLorean, it comes equipped with a flux capacitor and switches for players select a destination date. When they sold it in May, the Doners donated all of the proceeds to the Michael J. Fox Foundation for Parkinson's Research.
You can see more photos and videos of the time machine in action here.
-via Super Punch