There’s a famous scene in one of the Star Trek movies where Scotty, who has traveled to the past, teaches a metal company to create the transparent aluminum he needs to bring some whales back to ...

he has a pile of old farm parts and metal pieces that he puts into his creations. “I have some sickle teeth there, old tractor wheels, rebar, disks, gears, cogs, and old plow, and whatever else ...