There are a lot of items that can be purchased very inexpensively at garage sales or thrift stores and sold for higher prices elsewhere. A few years ago I discovered that I could purchase good hardcover books at my local thrift shop for $1 or less. I realized that some of them could be sold on for $15-$20, which turns out to be a pretty decent profit.
If you have a knack for creating unique images, there’s no need to fuss over your own inventory. If your creations can be easily printed onto a product, then you can make money. Upload your designs on a variety of websites like CafePress. If someone likes them, the company prints them up and ships the product. You could create unique designs for calendars, books, T-shirts, bags, hats, greeting cards, or posters and get a commission for each one sold. Some of these sites include Zazzle, Teespring and Lulu.

I’ve found that fear often stops aspiring consultants from starting a consulting business–or any business–and on my blog, I talk about how to overcome those fears. I also talk about practical, concrete things you can do to start and run a successful consulting business, along with tools, tips, tricks, and techniques for automating your business and keeping costs to a minimum. The info I give is applicable to most other types of businesses as well.

Some of these promotion techniques may include article marketing, social bookmarking, forum posting, writing press releases, submitting your site to a number of search engines and directories, and blog posting; just to name a few. Most businesses don’t pay their own staff to perform these tasks and choose to outsource all their SEO and SEM tasks instead.
"[Entrepreneurs] have to be people-oriented. Your business will die without a good team to back you up. Study management techniques, learn from great leaders, [and] review where you're succeeding and failing so you can help others improve. An entrepreneur has to be able to build a team who cares about its work, and to do that, you have to care about how you create your team." – Jonathan Barnett, president and CEO of Oxi Fresh Carpet Cleaning

In a market full of uncertainty, it is the entrepreneur who can actually help clear up uncertainty, as he makes judgments or assumes the risk. To the extent that capitalism is a dynamic profit-and-loss system, entrepreneurs drive efficient discovery and consistently reveal knowledge. Established firms face increased competition and challenges from entrepreneurs, which often spurs them toward research and development efforts as well. In technical economic terms, the entrepreneur disrupts course toward steady-state equilibrium.

Pay-per-click advertising is the easiest way to get traffic to a brand-new site. It has two advantages over waiting for the traffic to come to you organically. First, PPC ads show up on the search pages immediately, and second, PPC ads allow you to test different keywords, as well as headlines, prices and selling approaches. Not only do you get immediate traffic, but you can also use PPC ads to discover your best, highest-converting keywords. Then you can distribute the keywords throughout your site in your copy and code, which will help your rankings in the organic search results.