It depends what you are wanting to host on it?
If you are hosting static pages then it's sometimes possible to host in Google Drive and use Cloudflare for mapping a domain to the url
For something more complex you would need to have some proper hosting (unless you were going to use an old...
If it's just the domain you need and you aren't bothered which country ending it is, there is a service called Dot TK
Tokelau the country allow anyone to register domains ending .tk for free
