Probably not what you're asking, but my side project is working on software projects for a couple local businesses. I work about 12 hours per week on the side at $150 per hour so I make about $7,200 per month.

Having W2 and 1099 income like this is advantageous as well. First, I max out my social security tax at my main employer which means my side income is social security tax free. Second, I max out my 401k employee contribution of $18,500 at my main employer. I then have an Individual 401k with Vanguard where I take about 20% of my profits and deposit that as the employer portion which lowers my federal taxes substantially. I take a good portion of what's left and deposit that in a 529 account for my kids which my state gives a tax deduction for that on state taxes.

My smaller client was just a friend that I met through my kids' school. My larger client I met while studying for a programming certification at a baseball clinic my oldest son attended. A guy who owned a local business saw me with a thick book and approached me with, "Are you in IT?"