I think the best advice so far is in fact to learn other tools in your spare time and work on some open source and personal projects so you have something to sh

I think the best advice so far is in fact to learn other tools in your spare time and work on some open source and personal projects so you have something to show. Start a blog to describe your experiences. Send a potential employer to look at your blog and projects and they will see someone who (hopefully) communicates clearly and codes well and thus will want to hire you.