Another option for earning a side income is to deliver for PostMates. Similar to working for Uber and Lyft, you can work whenever you want. While the pay might not be enormous, you do have the ability to earn tips. If you're in a highly-trafficked area such as Los Angeles or New York City, this is a great way to earn some cash and you don't even need a car.
This list offers some great ideas and inspiration for folks looking to increase their income. There’s really no reason that anyone with some ambition, a good work ethic, and “people skills” can’t earn some extra money (or a full-time income) pursuing some of these self-employment ideas. I’ve done a little research, myself, to compile a list of small business ideas, and stumbled upon a few possibilities which you didn’t cover:
Driving for one of the two globally expanding app-centric taxi alternative services, Uber or Lyft can still be a fairly lucrative way to earn money as a side business idea on nights and weekends—working only when you want. But before you dive head first into this side business idea, do your homework and calculate the costs of extra gas, mileage, tires, wear & tear and usage on your vehicle—it's not a guaranteed business idea that'll turn a huge profit every weekend.
Renting out an extra room sounds like a pretty smart idea. App development also sounds like a pretty good idea, I found the link you left about how Benny Hsu made 30000 in 30 days quite useful. I have always been unsure on how you can start a blog but the 6-part video that you left was very helpful to understand how better. I also liked the idea of car flipping. I think it could work quite well especially here in Hawaii. I have personally found that dividend investing to be very useful in increasing income. I was also completely shocked that you can be paid to be someone’s friend. That is crazy that you found that.