Very new to mechanical keyboards with unfortunately no design talent – but I would LOVE to see a full "Back To The Future" (my very favorite movie!) keycap set though! I did a google search because I expected that this already exists, but (besides a single flux capacitor cap) it doesn't seem to be the case ...
Wouldn't this be a thankful theme for somebody talented to create a beautiful BTTF set? Novelties like (the already mentioned) Flux Capacitor key, but also for example arrow keys in yellow/orange with "speed tail" like on the original title font, the "8" key somehow also is "88mph", "OUTTATIME" license plate return key, "GREAT SCOTT!" esc key etc. Don't know if and when keys like these gets too "gimmicky" as a whole layout concept, but I see very nice possibilities.
I'm sure somebody else already came up with this idea, in this case: sorry – but I would really love to see something like this! (Or is this, even in such small quantity for some keyboard geeks, a too high risk of copyright infringement?)