Every now and then when I was working full-time, I had some piece work things that made me some reasonable pocket change. They were sometimes interesting (e.g.

Every now and then when I was working full-time, I had some piece work things that made me some reasonable pocket change. They were sometimes interesting (e.g. being a judge for a best-of award at a conference) and/or a way to fill a few dead hours and have an interesting chat. But if you have a good job, they're mostly a distraction for not that much money in the scheme of things.