NOT uber or anything like that.
But, there's an app where companies who just need short term work post shifts. Once you've completed a couple shifts on the app with any employer you are then able to cash out a few hours after your shift ended.
Since these places do not have to worry about benefits, you can easily make $90-$120 a day. So, in my case, two shifts cover rent for the week. The third shift let's me put some back for my monthly cell phone bill and cover essentials. A fourth shift (if I wanted to take it) gives me a lot of fun money.
So, I can choose to grind through a 7-day week and then take four days off. Then work three or four shifts and then take three or four days off. I will finally not be tied to a schedule. If I don't feel like working then I don't take the shift. No occurances, no points, no penalty.
Now granted, some of it isn't glamorous work or anything that will make you look cool. But, you get flexibility and (in my case) a lot more money than my previous traditionally scheduled job (which also didn't provide any benefits or pto).