Accommodate Multiple Forms of Payment: Many deal-seekers carry cash, but you want to accommodate every potential buyer. So, in the days leading up to the event, consider purchasing a point-of-sale system that can accept credit cards. Square is a popular and relatively cost-effective option: it doesn’t cost anything upfront and bundles credit card processing fees into its own per-transaction fees, resulting in a net expense of 2.75% for most transactions (net of $97.25 for every $100 charged). This is a small price to pay to capture the ever-growing cashless consumer demographic. On the day before the sale, visit the bank and grab $100 in small bills and coin rolls to ensure you’ll have enough change for buyers who do prefer cash.
Get paid for your opinions. Taking surveys online can be a relatively quick way to earn enough to afford a few extras. Harris Poll Online, for example, awards points for the completion of online surveys, which can take between five and 25 minutes to fill out. Survey takers accumulate points and can redeem them for gift cards from retailers such as Amazon and Starbucks. Other online outfits that will pay you to take surveys include SurveyClub, Global Test Market and Swagbucks. There's no cost to sign up.
Speaking of teaching, even if you don’t have a teaching degree or current certificate, you may be able to make money teaching English online. This is a great side gig for those working a full-time job. The scheduling is flexible and you can work in the early morning, evenings and on weekends. And the pay is pretty good, too! Some ESL tutors are paid up to $21 per 40-minute class. A few companies to consider:
Have an extra room in the house? Try renting it out on Airbnb.com. According to Smart Asset, you can pay up to 81% of your rent by listing one room in a two-bedroom home. If you're really looking to ring in the cash, renting out a private home or apartment is the way to go. According to Smart Asset's findings, rates for full apartments are significantly higher than those for just rooms, with annual profits ranging from $15,000 to $31,000 for a two-bedroom apartment.
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Mentorship. With sites like Etsy, it simply doesn’t make sense to reinvent the wheel when opening a shop. Instead, look to others who have been down the path and have learned the hard way what to do – and what not to do. Blogs like Handmadeology and EverythingEtsy.com offer hints and guidance for artists just looking to get started in this profitable home-based business.
(The best part is not wearing a suit and tie.) Sales agents make cold calls to businesses or customers, explaining a product or service, and leading the client through purchasing. Nearly every industry has a need for sales agents, so it takes some digging to find your work from home niche. Try adding the search keyword “telecommute” or “work from home” to your sales searches.

I surprisingly get a lot of people asking to detail their car. I never intend to make a business of it, but I love doing it to my cars and people ask me to do it to theirs. All it takes is a cheap orbital buffer (mines a used craftsman) and a shop vac. I normally get easily $100 for a basic wash/wax/vac, or $200 to remove scratches and polish then wax the car.
However, like anything else truly worthwhile, apps require a significant investment of your time or money upfront. If you don't have the skills, then you have to hire someone who can assist you in creating a great app. But first you need to come up with an idea that will sell. Do the proper market research and analytics to come up with the right app.
This has become a popular business model for online entrepreneurs over the past several years, and will probably just continue to grow in popularity. The best thing about selling online courses is that once you do the up-front work in creating the course and setting up your marketing strategy, you can get paid over and over again for work you do once.
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