I think one of the most important things you can do, given the skills, for a software freedom future is: Make movies & other entertainment!
Seriously as long as we're relying on major corporations to entertain us, they will be pushing proprietary software & DRM on us.
Also it's a good way to communicate our concerns, but ultimately all that's important is to have (more) great DRM-free entertainment for all to enjoy!
No coding skillz required.