John scribbled out pretty much every futuristic Hill Valley technology you craved for as a kid, all the way down to Griff's automated baseball bat and rhino boots (which were apparently based on Bell's actual footwear at the time).
What '90s kid didn't grow up wanting their very own go-go gadget hate crime bat? Remember the disappointment when you realized they didn't really exist? And now, 30 years later, we're still waiting for that groundbreaking extendo-bludgeon technology!
Oh, wait ... no, we're thinking of these:
That's right, you shits. Along with the entire aesthetic of Back To The Future's vision of 2015, Bell designed the Holy Fucking Grail of fictional toys -- and consequently, every child's first taste of profound disappointment for the real world. Thanks, John! Any other ways you'd like to dominate our childhood fantasies like some kind of one-man dreamland cartel?