Always wanted to contribute to open source and expand my knowledge about programming and connect with people, however, I've always had way to much paid work that I was never able to contribute to OS; been working full-time and part-time projects in parallel for last couple of years, majority of my carrier to be more precise.
You could still contribute in tiny but helpful ways. For example, fix a typo in the README, add an example to the docs on a topic you initially found confusing, etc. While these contributions seem trivial alone, together they add up to a more polished product.