Hi! I recently found an article that invites people to join the 15 days writing challenge. :) Since I love to write and this challenge would improve my writing and language skills, I thought I would give it a try. I am not native speaker, so please try to understand that I may make mistakes ;)
Feel free to join also!

Day 1. Write an article that's about YOU. Introduce yourself!
Day 2. Make a list of the things that you are grateful for.
Day 3. Make a list of your favorite books.
Day 4. Make a list with things you couldn't live without.
Day 5. Write a short story.
Day 6. Make a list of your favorite movies.
Day 7. Write an article about something that you find interesting.
Day 8. Make a list of your favorite destinations.
Day 9. Your own idea, for a challenge.
Day 10. Write a book review.
Day 11. Make a list of places you want to go.
Day 12. Write a movie review.
Day 13. Write about your passion(s), or what you just really like to do.
Day 14. Write some facts about yourself.
Day 15. Make an Autumn/Winter/Spring/Summer bucket list.

Enjoy!

I think the article was posted by @eifos9 link: