Also, actions > words. Since you are working on the Full Stack (I’m assuming the non-Beta version), apparently you would be the FIRST camper EVER to actually complete it if you donated your man-hours to enough non-profits. According to Quincy Larson:
In our old certificate program, we awarded the Full Stack Developer Certificate by completing an additional 800 hours of coding on open source projects used by nonprofits. But not a single camper has accomplished this to date, because they all get developer jobs long before they’re able to clock this many hours.
But, go deep, not broad with your involvement. This came up in another thread on which I commented. Not only does this show your chops, but your activity is publicly logged, and stands as a perusable testament to your ability to get the job done in a group environment.