a podcast sounds super cool. maybe if you know someone who hasn't experienced a particular series, it could be you introducing it to them it by bit (book by book, episode by episode, etc) with listeners getting the introduction too. or something else! just the fact that you have an idea for a podcast is really neat.

a good beta and person-to-discuss-fic-ideas-with is worth their weight in gold. good luck! they're out there.