Fiverr is now the worlds largest marketplace for people to make money selling small services (known as gigs).
What you offer could be absolutely anything, from writing and translating, social media posting, playing pranks and teaching to creating music, voiceovers and short video clips for people all around the world!
The default price is $5 (hence Fiverr..), but you can attach extra services to gigs for more money. Whilst it might not seem like much, it can quickly add up and there are plenty of examples of people making a really good living from the site. The key is to get a system in place which minimises the time spent on each gig.