Marty McFly and Doc's Amplifier from Back to the Future.
It took Marty forever to repair this Amplifier after he blew it out the last time
Have you thought about buying a table at a convention and selling these things?
Haven't thought about that route in particular, no. Doubt I could afford doing that haha.
I don't know man, you seem to crank these things out. See how much a booth is at a convention that has an artists alley and make a few posters to advertize yourself. Set them all out on a table with prices on them and you'd probably make your money back real quick. Pop culture stuff sells like crazy at those things.