10 Wish Fish Episode

As strange as a "wish fish" sounds, it wouldn't be too far-fetched for a show that already has imaginary friends that can date. This concept came up at the 2008 San Diego Comic-Con where show creator Eric Kripke shared writer Ben Edlund's idea for a "

" (via ).

9 “Fluff ‘N Fold” Episode

The idea behind this episode, named and imagined by Robbie Thompson, a show writer, focused on Sam and Dean doing laundry while arguing about who should watch the dryer. Thompson shared this unused idea at a speaking event at DePaul University in 2015, as reported by

. Focusing on mundane tasks was a lot less common in and could've been an opening for the writers to show the brothers' dynamic in a refreshing, ordinary way.

8 Jumanji-Style Episode

An episode following Sam and Dean trapped in a game sounds like it would have endless possibilities.

Long-time executive producer and director Robert Singer explained, "" (via ). Although this episode made it past the idea stage to the script stage, it wasn't meant to be.

7 The Midnight Train Episode

In a 2017 interview with , executive producer and writer Andrew Dabb gushed about an episode that was in the works for after season 13's mid-season break.

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