If you love to travel and find yourself randomly searching for airfare sales or browsing Lonely Planet, why not carve out a niche for yourself as a private travel agent? My friend, Mark Jackson did just that, making extra money online with his travel consulting side business. Start with word of mouth recommendations from friends who know they can count on you for the cheapest flights, and then move on and create a Facebook or LinkedIn group to invite people who want to stay on top of the latest deals. Eventually you could spin this into a full-time consultancy teaching people how to make their dream trip a reality.
If you don't already have work experience with importing and/or exporting, you will have a longer learning curve. You can start by learning the basics and hosting educational sessions to teach others what they need to know to get started in import/export. That alone would probably gain you your first couple of clients. If you keep going with educational seminars and expand your reach to outside your immediate region, you could probably develop a sufficient and ongoing customer base very quickly, but be careful not to outpace your learning curve!
Because digital marketing has so many options and strategies associated with it, you can get creative and experiment with a variety of marketing tactics on a budget. With digital marketing, you can also use tools like analytics dashboards to monitor the success and ROI of your campaigns more than you could with a traditional promotional content -- such as a billboard or print ad.