I have to write a non-fiction story (it can be about anything) any good ideas on the topic?
Write about a soccer player that looses his ball in the woods. When he goes to find it it's not there, but however a different ball is. He starts playing with the new ball and becomes the best soccer player ever.
You could write an autobiography (a story of your life), a biography (a story of someone else's life), about a past experience you've had (like going on vacation or something)....
you can do an expiriment (doesnt have to be science-related) and then explain your findings.