You do not buy crypto any more, you earn them.

Your prefered ngo can get 100,000 Ventureo when they join the Ventureo network
http://ventureo.solutions

You get a 20 Manna basic income each week when you join
http://mannacurrency.com

You get 10 Onfocoin when you network
https://my.onfocoin.com/connect-social/code?code=chrisaiki

You get the equivalent of $50 in Stellar when you promote coinbase
https://www.coinbase.com/join/5cab04279eb7d90ba37e8802

You get SNAX when you tweet !
https://snax.one/

You propose your skills on Steemgigs to earn steem
https://steemgigs.org/

You get EverGreenCoin when you protect the environment.
https://evergreencoin.org/proof-of-environment/

You get Steem when you participate to an opensource project
http://utopian.io

What else do you need ?