"Begin a 500-word piece with 'If I had the power to change something, I would change...'"
If 500 words seems like too much or too little, ignore the word restriction. And if you don't want to write it from your perspective, write it from the perspective of a character, using whatever point of view you'd like.
2) Listen to this song, and ignore the video. Now write.
3) Write about a memory that you or a character have. It can be a memory of some consequence, or it can be one that's stuck with you, but you're not sure why.
If you'd like to share some exercises or prompts of your own, feel free to comment on this post. Or if you write something in response to this exercise and want to share it, comment or send me a link. I would, of course, love to see what you wrote. But you're not obligated to share. In other words, do whatever you want with these. I just hope they prove useful for someone. Happy writing!