I personally have enjoyed working a direct sales/home based business on the side. I found a good, legitimate company with very low upfront costs/overhead. It has been a great experience. Just be sure that the company offers training and some sort of simple, step-by-step system and it helps if they are in the DSA Top 100– instantly proves their legitimacy!
Creating a jobs board website can be another profitable venture. The ‘jobs’ field can be quite saturated, so it is important to find a niche that is still crying out for a jobs board website. Monetize this type of site by charging businesses to list their jobs on your site. Those searching for jobs could also be charged a fee to access the higher paying job adverts.
If you’re looking for inspiration, my friend Michelle Schroeder-Gardner of the website Making Sense of Sense has become the expert on all things affiliate marketing. Michelle earns more than $100,000 per month from her blog and the bulk of her income comes from affiliate sales. Michelle has had so much success with affiliate marketing that she even has her own course called Making Sense of Affiliate Marketing.
With just a few paint and stencil supplies you could walk the neighborhoods with curbs and solicit your curb number painting services. Obviously, you need to be somewhat handy with a can of spray paint and stencils, otherwise, you might have people coming after you if you mess up their curb. That said, there is a business for this as people are out there making it happen.
In fact, AirBnB recently swallowed up luxury vacation rental provider, Luxury Retreats, and other consolidations in the marketplace have happened with leading sites like InvitedHome's acquisition of PPG rentals and Seasoned Dreams' platforms, and Expedia's $3.9 billion acquisition of another vacation rental giant, HomeAway. The market is booming and the time is ripe for entry, no matter how big or small your home or condo might be. 
You'll have to leave your house for this one, but hospitality consulting firms like Coyle rely on secret shoppers to evaluate their clients' services. Sign up to be an evaluator and you could get paid to receive spa treatments, dine at restaurants or stay at a hotel. There are lots of opportunities in other fields, too, ranging from entertainment (hello, amusement parks!) to automobiles. However, watch out for scams; check the MSPA for a list of legitimate mystery shopping companies. Earning potential: About $10 per hour
Really good article with some great tips. Affiliate marketing has the potential to earn lots of money and I'm hoping I can make it happen. I have tried the matched betting and it DEFINITELY works. The one thing I would say is that you need to check that any bets have been accepted by the bookmaker. I have had on occasion bets which look like they have been accepted but don't register in my account. Always go into your account and check outstanding bets or your bet history.
×