You could do a lot with 500 characters.

You could tell like 3 very mundane stories.

1. A pencil was on the desk. It rolled off. No one picked it up.

2. The ice cube tray needs refilled. I will refill it.

3. There is a lot of wind outside. It messed up the bangs of that lady.

Bonus story.

I am in my bed. I need to get groceries but I don't feel like it. Oh well. I must go.