For one thing, there are fewer barriers to entry compared to other types of investments. For example, both Prosper and Lending Club, two of the largest P2P platforms, allow investors to fund loans with as little as a $25 investment. Both lenders also open their doors to non-accredited investors. While Title III of the Jumpstart Our Business Startups (JOBS) Act allows both accredited and non-accredited investors to invest through crowdfunding, every crowdfunding platform has its own policy regarding who can participate.
“I don’t believe the overnight success exists. There’s a lot of hard work and time involved beforehand,” say Flynn. Angry Birds may have seemed like an overnight success but it was the 52nd game that Rovio created. Flynn says it took him a year or year and a half to build audiences for his most successful sites. (Read these time management expert's tips on the work habits of successful people.)
If you can save a lot early on in life, you can build up sources of unearned income, and this income will be exempt from payroll taxes. This is good news for investors and for retirees. Any pre-tax salary deferral contribution made to a retirement account, pension plan, or other pre-tax contribution will lower the amount of federal and state income tax liabilities, however, they do not lower your payroll/FICA tax - the FICA tax has already been taken out of gross wages. 
Grouping is important for a number of reasons. If you group two activities into one larger activity, you need only show material participation in the activity as a whole. But if the two activities are separate, you must show material participation in each one. On the other hand, if you group two activities into one larger activity and you dispose of one of the two, then you have disposed of only part of your entire interest in the activity. But if the two activities are separate and you dispose of one of them, then you have disposed of your entire interest in that activity.
Peer-to-peer lending means loaning money to other people. Specifically, you lend money to people who don’t qualify for traditional financing. Companies like Lending Club and Prosper offer returns in the range of 4-10%, which are a lot higher than a typical saving account. You will be able to select the right investment for you, based on your risk assessment strategy.
One of the most appealing options, particularly for millennials, would be #12 on your list (create a Blog/Youtube channel). The videos can be about anything that interests you, from your daily makeup routine (with affiliate links to the products you use), recipes (what you eat each day) or as you mention, instructional videos (again with affiliate links to the products you use). Once you gain a large following and viewership, you can earn via Adsense on YouTube.