Commit Together by Github - Now add co-authors to your commits
Artbreeder - Create beautiful, wild and weird images
Commit Print - Posters of your git history
Codenail - Create art with your code and logo and order a poster of it
gitbird - So, I don't always remember to tweet what I do, but commit my code often, and what do users love more than your product?
No Paint - A game to create your very own art masterpiece