The Fleischer Cartoons
They came up with the idea of Superman flying because he looked silly leaping around
The Radio Show
Jimmy Olsen, so Superman would have someone to talk to that wasn't an icky girl like Lois
Kryptonite (although technically K-Metal predated it)
The George Reeves TV Show
The more assertive, less milquetoast Clark Kent
Jimmy calling Perry "Chief" and him not wanting to be called that.
Inspector Henderson (who finally returned in Superman Smashes The Klan)
Novels
The spelling of Jor-El, instead of Jor-L.
The idea of Luthor using his genius to run a multinational conglomerate.
Super Friends
I actually can't think of anything that the 1960s Filmmation or 1970s & 80s Hanna Barbara cartoons created. They were pretty faithful to the comics. Maybe the Super-Mobile? But I assume that was created by a toy company.
Jesus Christ Superstar
I think this is where the whole Superman = Christ stuff began, right?
Superman The Movie
It might be easier to list the stuff from this movie that didn't become a recurring element, but here
are the main ones.
The idea that the S-Shield is the El Family Crest.
Krypton's crystal technology
Zod being the main Phantom Zone baddie, along with Ursa and Non, who were created for the movie (although Ursa is clearly a knock off of Faora)
Lois giving Superman his name and being the first person to interview him.
Lois being a bad speller.
There are more, I'm sure.
The Superboy and Lois & Clark TV shows
Frankly, I can't think of anything these shows added.
Superman The Animated Series
Brainiac being the central computer on Krypton and the 3 interconnected circles as a visual motif.
Lois calling Clark "Smallville".
Darkseid becoming Superman's ultimate baddie.
The Smallville TV show
The younger Ma & Pa Kent
Lionel Luthor
Anything else I've missed?