I started this project early on into my python learning. Its a simple projects using the NASA image API, but its one that I have running every day. I always enjoy looking at the amazing photos that show up.
The script requests one of NASAs photo of the day from each of the past 10 years. Once it grabs the photos, they are saved locally into a folder that is used to update the desktop background every 30 minutes. Every day the images are cycled with 10 new pictures.
Check out the code here.