So far, I have completed five Pull Requests (requests to pull changes into the mainline) on Adafruit stuff. They are just waiting to be reviewed and hopefully merged. These require fixing issues that people have brought up. An issue can involve writing or modifying code, editing files, etc. I have done a bit of everything
One PR required me to write code that added a new feature to a library. In addition, I had to write a demo program to test everything.