I'm with you on this and will hungrily lap up any advice on the subject.

I write code that can't be open sourced for work, but want to contribute to OSS projects. But dammit, at the end of the day or week of coding all the time for my full time job, it is hard as well to sit down in front of the screen again without going mad.

Life, kids, wife, non-coding hobbies, coding hobbies -- whirlwind of competition for my time. Ugh.