"You inadvertently send your My Little Pony/The West Wing fan fiction to the New Yorker.
If your reaction was a New Yorker cartoon, what would it look like? Would it involve dogs?"

McSweeney's prompts

Challenging

Writing Prompts to develop your writing craft

Medium

Fiction, non-fiction & poetry writing prompts

NYT Prompts for Narrative and Personal Writing

Science Fiction writing prompts

Writer’s Digest Writing Prompts

Varied

Audio writing prompts

Random Writing Prompts

More prompts

.... Even more prompts

Easy

Wild writing prompts

Writing Prompts to start a story

A writing prompt for every day of the year

Writing prompts for different genres

Writing prompt by topic, festival & season

Ten minute writing prompt