Starting a business in this field will require some experience, but as long as there is anxiety, there will be a market for coaching people to create and deliver presentations. Invest in video equipment or use a smartphone to record students as part of the coaching process. If you have a background in radio or TV or specific experience in high-profile public speaking, all the better.
If you start getting too big for EBay or decide you want to try a different flavor, Amazon has a marketplace as well. I prefer using Amazon because I can depend on their shipping, have a Prime account, and trust their reviews (overall, not usually singularly, although occasionally that as well). Learn more about Amazon’s marketplace by clicking on this Lifehack, and delve into the marketplace.

While the barriers to entry for a retail shop can be very high, one way to keep costs down and limit your time investment while you keep your full-time job, is to set up a weekend popup shop as a side business idea. More of whatever it is you’re selling—donuts, clothing, antique baseball cards, or anything else—will stay in your pockets instead of going to pay for operating expenses such as rent or utilities by choosing to pursue retail as a side business idea with a short-term rental. This guide from Shopify will give you a step-by-step process for getting your popup shop off the ground.

If you live near a university, there are likely all sorts of research studies looking for participants. While I was an undergrad at Virginia Tech, I got paid $500 to participate in a 6-week dietary study. The study provided all my meals and paid me, but I had to eat a 5,000 calorie diet of 50% fat for 6 weeks, plus I had multiple muscle biopsies, urine/blood testing, etc.
Decluttr – Decluttr is an interesting service that takes the pain out of listing individual items on Ebay. Instead you scan them into Decluttr, they give you a price, and you ship everything you have (books, DVDs, electronics) to them in one box — they’ll even cover shipping. You can definitely make more selling your stuff on your own, but the convenience factor is tough to beat.
If you’ve got a way with words and expertise in a niche, there are plenty of sites that will pay for articles and content you write. Think of the sites you read regularly. What can you contribute to them that would be interesting? Research your niche and then look for ways to pitch articles. Many sites will simply have a submission or contact link in the footer. To get started, check out my full guide to becoming a freelance writer on the side and then submit your articles to places like Instash, Listverse, TopTenz, A List Apart, International Living, FundsforWriters, and Textbroker.

Someone out there is remodeling their kitchen and needs to know which shade of granite will match best with mahogany flooring. That someone will often be happy to pay you for your advice, especially if you’re the kind of person that subscribes to websites like Contemporist and you have the motivation to turn this business idea into a money-making enterprise.


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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