n1cod3mus made this flux capacitor from Back To The Future. He writes a complete step-by-step guide on the Instructables site:
Since the release of the film back in the 80s I have been obsessed by the film Back To The Future watching the trilogy repeatedly. I watched it at the cinema over and over, I was very lucky that my great uncle was a projectionist so I could just sit in show after show.
So about 10 years back I decided I wanted to build a flux capacitor, but I got stuck back then because I didn’t have the correct skills at that time and I was making a mess of it, so I shelved the project.
I decided to come back to it with my now improved skills and technology, and this time I have something awesome!!
Check out the video after the break.