One should think about their skills, hobbies and basic daily habits as well. Do you like to cook? Be a personal cook or dinner parties. Baking? Make wedding cakes or cupcakes for weddings/special events. Do you enjoy cleaning? Trying going to banks/repo companies and ask if they are in need of a repo cleaner or market yourself as a all-around cleaner. Know how to mow a lawn? Get paid to do it in your neighborhood. Sell products from large companies – Jewelry in a candle, Sentsy, Health and home products – etc.
In addition, I've been talking about conditions to maximize productivity and creativity and moneymaking ability. There are other considerations in organized human groups, and there are conditions under which productivity is not the thing you're most interested in. There are conditions where more centralization may be appropriate. For example, during a war, you do not want your air force, army, and navy to be fiercely competing with each other, but instead you want during a war more centralized control than you do in peace time. And there are also human groups for which productivity and differential money-making ability are not the overriding consideration. I don't want you to go home tonight and each of you to say to your spouse or significant other, "Darling, I've just heard this guy Jared Diamond, who says that within human groups competition is what spurs productivity and innovation, and so I think we need to follow his advice in our household. For the next month let's see which of us earns a bigger income, and at the end of the month the bigger income-producer will keep on with the job, and the one of us who has lower income and is less efficient can turn to scrubbing the floors and shopping at the supermarkets." That just illustrates: there are other considerations in a marriage than optimizing productivity.
Sell sperm if you are male and meet the eligibility requirements. If you are male and meet certain criteria for height, age, and education, then you may be eligible to make money as a sperm donor. Donors make around $70 (USD) per donation or up to $1,500 per month at some sperm banks. However, only a small percentage of applicants are accepted. If you want to try to make money this way, look for a sperm bank in your area, check their eligibility requirements, and complete an application.
They don’t even have to be your bottles: Plenty of people are too busy or lazy to bother returning a six-pack worth of beer or soda cans for 30 cents and simply leave them out for curbside pickup. It may not be trash day in your neighborhood, but it surely is somewhere. Fill up a 50-gallon trash bag with cast-off cans, and you can redeem them for about $12 – it’s just a start, but you can do it again and again, and all it takes is time and hustle.
Every year, hundreds of millions of documents are notarized in the United States: wills, mortgages, citizenship forms, handgun applications. While for decades, this has all been done in person, there is a budding crop of sites that allow notaries to take their services online. If you’re already a notary, you can sell your services online. Or, if you want to get started, check out the National Notary’s checklist for becoming a certified notary.