Many of these memes and wishlists are long deceased, BUT that doesn't mean they can't still provide some inspiration for anyone looking for a prompt to base some fic or art on. There's also no reason you can't fill prompts that have already been filled or use them as a jumping-off point for something a bit different. Sometimes all you need is a nudge or a fresh idea.
If you do fill one of these older prompts do make a comment to the original prompt so that the prompter gets a heads-up about it and can enjoy the fruits of your efforts :-)
Outsider POV Comment Fic Meme - 2013
Endless Summer Comment Fic & Art Meme Spring 2013 Fic Exchange, Left Over Prompts Free For All Sharp Dressed Man: Comment Fic & Art Meme Winter Fun: Comment Fic & Art Meme Resolutions Comment Fic & Art Meme I Didn't Know You... Comment Fic & Art Meme Summer Fun Comment Fic Meme Keeping Cool Comment Fic Meme Outsider POV Comment Fic Meme The Very First Com Comment Fic Meme Team Dean Wishlist (Dean-flavored requests for fics, art, gifs, etc)
Team Sam Wishlist (Sam-flavored requests for fics, art, gifs, etc)
Adopt a Bunny Free for All