You can earn cryptocurrency with your skills. For ex : Photo editing, Video creation, Blog writing, Socialmedia promoting and etc. if have any thats skill you can participate bounty campaigns after your can get good valuble coins without investing your any capital money.
yes, if you have a lot of expertise, it's easy for you to take part in a number of prize campaigns, but all that is needed is hard work.
and if possible I feel joining Campagin videos is a way to generate lots of tokens.