You are the luckiest person on this earth if you can find your business in your hobby, i.e. if you love to prepare craft articles, and your profession is to prepare and sell them you have your hobby and profession at the same place. Here you would not be tired of working, because you have a passion for doing it.
Now the question that you have is, can I knit and sell sweaters? Yes, you can! One would be surprised to know how virtually any hobby can be converted to profits, and without tremendous overhead or ridiculously high start up costs. What can be better than selling your skills instead of selling any specific product which you hardly know?
It is a general tendency of human beings to collect information about things that interests them. People who enjoy singing would try to learn how to sing well; what are pitch, tone and volume. It would be easier for them to groom themselves as a singer and sell their singing skills.
You need not have a physical product to sell in order to make a profit. You can also sell information. Having an inventory or having to create physical items from materials offer a lower profit margin than selling information. Selling information is among the top in the selling business. Though it involves lesser cost to get started, it generates profit after just a couple of sales. Informational products include eBooks, online courses or email courses, software, audio files, web sites: anything that can be downloaded from the Internet.