What do side projects that make income tend to have in common? When I hear about people's side projects or read them here, I'm not certain what the lessons are. I personally do side projects just for fun but heck if interest/passion could somehow be directed toward money making side projects that were good for the world then i'd direct my energy toward those. Possibly. It's a good thought exercise everyone should at least consider, can a hobby be monetized without fucking up the reason you loved it in the first place? Can it be done in a way that makes it less like your day job, so to speak?
They solve a small problem most startuppers / entrepreneurs would not jump on because the market is so small (or at least they think it's too small).
They don't want to change the world, just make it a tiny bit better.
> Can it be done in a way that makes it less like your day job, so to speak?
Of course, just do things when you feel like it to do, no stress, no pressure.