Selling blood….there are very few companies that buy your blood. #1 reason being MANY people willing to sell their blood are not the type of people you want to receive their blood, ie drug addicts (not everyone). And if you can find a company willing to buy your blood you can only give it every 56 days (for whole bood). The most common blood product that is bought is plasma and you can only do that every 28 days (in New York state …which won’t buy blood anyways).
If you're running on fumes, financially speaking, but you have some money coming your way soon, consider pawning something of value to borrow fast cash. Of course, to get those items back you'll need to pay back the loan with interest. If you don't pay it back in time, that you'll lose the item. If it's really something that has a lot of intrinsic value to you, don't do it. But if it's something that doesn't, you can certainly consider it depending on your situation.
Write and publish an eBook. You don’t need a traditional publisher and financial backing to publish your own book anymore. In fact, Amazon.com makes it possible for you to publish your own eBook and sell it independently – with no financial investment on your part. And with Kindle eBook publishing, your book will appear on Kindle stores worldwide within 24-48 hours. Just be prepared to market it yourself on social media, your blog, or elsewhere if you expect to generate sales.
But when you find a way to serve a million people, many other benefits follow. The effect of word of mouth is greatly magnified. The feedback you receive is exponentially greater, and so are your opportunities to improve your products and services. You get to hire more employees and benefit from their experience, their skills, and their overall awesomeness.
One man’s trash is another man’s treasure. This is ever present in the sneaker world. I am an avid sneaker collector and a huge part of the culture is buying and selling your sneakers to keep updating your stock with your current favorites. I use a website called Kixify to buy and sell some of my sneakers and it is just like Ebay or Craigslist. Whenever I need money for whatever reason, I always look to see if I have a pair of shoes I am no longer in love with and willing to sell.
Donating plasma can actually work out better than selling your blood. It takes longer to donate plasma because they will put your red blood cells back in your system. The upside is that you can donate plasma as much as twice a week and you can make anywhere from $40-$60 per donation. You can make that $100 in less than a week if you can stomach the needle.