Cafe Press: This website allows you to create digital designs that can then be sold on the platform. You'll earn a commission for everything that sells and you'll never have to deal with logistics like printing, warehousing and customer service. If you have some graphic design skills, then this is a great potential source for your web-based income.
I would not bother boosting Facebook posts. That does not perform well. The best strategy is to create a custom audience of your visitors and email list. You may want to use that to create a look-alike audience as well. Then have a sales funnel and email campaign. For instance, you are going to get much better conversion rates from a warm lead who has already received some great free content.
Next you can use Facebook to promote your affiliate product by becoming the top commenter, you will get lots of clicks. This is a simple way of showing people your Clickbank product. Make sure you don't spam because people don't like that at all, you have to add value. Forums are also a good way to promote and give out value while driving traffic to your free website where your link will be. So go out there and give it a go this is a great way to make some money online.