How are you at drawing? Can you play an instrument or record a tune? Do you have a rich, smooth voice that would be brilliant for voiceover work? Failing all that, can you write a poem, or content for websites? If the answer to any of these questions is 'yes', you could turn your hobby into a money-making empire by selling your services online.
The website Fiverr is a market leader in this field, but other similar websites are available. You can advertise yourself to a whole world of buyers who are just crying out for the perfect cartoon, poem, article or song but don't have the skills to do it themselves. You can even set your own prices depending on how popular you are. Some people sell poems for $5 a time. Others offer entire movie making facilities for thousands of dollars. If you've got it, and you're good at it, why not sell it?