Professional head shots can cost about $400 and up, so charge around $80--$100 to take photos with a decent digital camera. Have your clients do their own hair and makeup, always shoot them in natural light (it tends to be more flattering) and offer a discount if their friends book sessions with you. Place a basic listing on backstage.com (for free!) or distribute flyers at local acting studios.
Some subjects are much better paid than others, so although you may love the idea of writing about travel (badly paid) a better bet would be a niche like finance (much higher rates of pay). Check out the Pro Blogger job board for high paid freelance writing jobs – other places to look might be Textbroker or you can look at the “gigs” section on Craigslist.
Did you know you can make money simply by owning a car? It's true, thanks to a company called Turo. Turo is a “car sharing marketplace.” Next time you're in a new city and need to rent a car–instead of using an airport car rental, you could use Turo and rent actual people's cars! (Similar to how Airbnb replaces hotels). Turo lets car owners earn money in three ways: local pickup (renting your car from your own driveway); delivering your car to local places; and also by leaving your car somewhere to be picked up (such as at the airport). Earn Money with Turo.

Most of us are guilty of hanging onto things that we never use, myself included. Take a day and go through all your old stuff and get rid of some of it! One tool that is really helpful for this is Decluttr. You can enter your items barcodes into their valuation engine and they’ll give you an instant offer. Then you simply pack all your items into a box and ship them off for free.
If you have experience with marketing, SEO, or a knack for getting people excited about the products and services you use on a regular basis, think about refining your skills and putting them to work making money online as a small business marketing consultant in your region—especially if you can become a local SEO expert and can help local clients rank higher in their search results.
Want $1,000 to eat strawberry yogurt for 14 weeks? Willing to fly to France for four days to test jet-lag medication in exchange for $2,500? Yeah, we thought so. To offer yourself up for sweet clinical studies like these, check clinilabs.com, which focuses on projects in New York, or clinicaltrials.gov, a National Institutes of Health website that lists studies going on across the country.

If you have a fondness and talent for taking pictures you can make extra money online by becoming a stock photographer and selling your images to a stock photo company like ShutterStock or iStockPhoto. You’ll get royalties every time someone licenses an image you’ve submitted. To really be successful, build your own photography website to be able to showcase your portfolio and start getting higher-paid private corporate work.
Blogging is also one of the cheapest ways to make money online, aside from the time and and intellectual input that you have to invest. As you begin to make money from your blogging efforts, you can easily outsource for greater scalability. I also use Bluehost and I like the fact that it seamlessly integrates or interfaces with WordPress. You can set-up a domain or subdomain in minutes and start blogging in seconds. I love it!
Sell stuff online. If you have high-quality items to sell, there are a slew of online marketplaces you can use. Just make sure you understand the fees associated with your sale before you take the plunge. Where neighborhood Facebook pages and Craigslist ads are free, many online marketplaces or consignment shops charge for ads or require you to fork over a percentage when you make a sale.
Do you love getting refunds? How cool would it be to get money back on stuff you’ve already bought? Paribus is a service that lets you find out if stores you’ve shopped at online owe you a refund.  It’s free to sign up. Paribus connects to your email account and checks your receipts.  If they find out a retailer has dropped their price they file a price adjustment claim for you.  Try out Paribus.
Love dogs, but not ready to get one of your own? Get your fix by taking care of other people’s pooches — and get paid for it. If your home isn’t dog-friendly, consider becoming a dog walker. Apps like Wag! offer on-demand dog walking, so you can pick up walks when your schedule allows. If you have space (and your landlord’s permission, if you rent), offer overnight dog boarding. Dog sitters on Rover.com, the go-to site for pet-sitting, generally command $25 to $35 a night, according to the company.
The audiobook industry is booming, yet only 5% of books ever get made into audio format. If you’ve got a background in acting, or if people have said you’ve got a voice made for the radio, you can make extra money recording audio versions of independent and popular books. Sites like ACX connect authors with audiobook performers. So, whether you’re an author looking for more ways to sell your book, or an actor/voice actor looking to make some extra income, you can sell your services online.
While I think that your initial response to Phillip’s suggestion about design was a little too strong, Dasjung, I’ve got to chime in here and observe that Phil, ThunderCock and Dumbass, by resorting to name calling and simplistic reasoning, come across as very lacking in both decorum and sensitivity.  If a guy wants to expect, even demand, high quality in his field of choice, I beleive he has a right, if not a responsibility, to do so!  Also, Dumbass, be careful who you call Dumbass. You just show YOUR true colors by doing so. 
The stuff you can't sell online, you could sell from your garage on the weekends. Many neighborhoods plan annual or bi-annual yard sales. If you have items to sell, this is a great time to do it as the neighborhood as a whole can bring in a lot of traffic and help you perform better than you would on your own. If that's not possible, consider partnering up with a couple of families in a popular neighborhood.
Trading options might seem risky if you have very little capital to spare. But it's also a great way to enter into a market that would otherwise cost you an arm and a leg if you were to buy the stocks at full price. With options, you can participate in the movement of a stock without having to put up all the money to actually buy that stock. For example, if Amazon costs $1000 a share, buying a 1,000 shares will cost $1 million. But, 10 call options at $10 each (with each option representing 100 shares of stock) costs $10,000. 
And while it will take time to build up a big-enough audience to attract advertisers and other ways to make extra income from your podcast, the opportunity is there. John Lee Dumas interviews entrepreneurs seven days a week for his podcast Entrepreneur on Fire and now makes more than $200,000 a month from it. In fact, John publishes all his income online and showed that he’s made almost $13 million since launching in 2012.
@moxie1956 Thanks for sharing your experience with CashCrate.com. That’s certainly disappointing to hear that you weren’t able to make the $50-$75 a month that I expect. Maybe they are just going through a seasonal downturn or something. Like I mention above though, the real money with Cash Crate comes in the referrals. Find a way to consistently refer a large amount of people to the site.
This can include advertising, but many businesses also need help just filling up their social media profiles with relevant (and consistent) content. If you enjoy learning about social media and want to take things a step further and make extra money, social media management is a great option. If you’re good at it, it can also open up a lot of doors for you down the road. This is a great article from Small Biz Trends on How to Start Your Own Social Media Business.
I think what you’re asking is how you can make extra money to pay your real estate taxes. If that’s the case, it depends on your current financial situation, the amount of your estate taxes, your skills, and more. If you visit the “Make Money” section of our website, we have a few articles with different ideas that may be helpful for your situation: https://www.dollarsprout.com/category/make-money/
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