1) You can earn money buy providing services to freelancing marketplaces like oDesk, Elance, Freelancers etc.
2) As you already said, you have gig in Fiverr, update your gig details so that it contains proper quality, also promote them through as much platforms as possible.
3) If you have knowledge of web development or graphic design, you can sell your items at Envato Marketplace.
4) you can earn through blogging, create a blog with topic in which you are interested. Monetize it with Google adsense and earn money.
5) You can earn through affiliate marketing. Create a video, write short description of your affiliate product and post it in Youtube. Then promote it to get first page ranking, once you get first page ranking you will get some conversion definitely.
$100 throughout the year is not that much tough, just keep trying and never give up. All the success for you !