NFTs are the in thing at the moment. If you want to get your hands on some for free or at minimum cost, check out the Worldwide Asset eXchange (WAX).
Simply create a wallet here
https://on.wax.io/wax-io/
Then browse to the following website and look for free NFTs that pop up from time to time, remember to login to the site with the wallet you just created (you did click the first link didn't you?)
https://wax.atomichub.io/drops/