So Coinbase, like it or not, is a juggernaut in the crypto industry. The occasionally have a "Learn and Earn" program wherein you can learn about a crypto, how to use it, what it does, and what it is all about. At the end of the short tutorial, there is a question or two. Answer those and get rewarded!
https://www.coinbase.com/learning-rewards
The one I found today is for vechain (VET). Learn a little about it, take the quiz, make 2USD worth of freely tradable VET.
Then the next step: Download the VeWorld wallet, send over some VET that you just earned, and Coinbase dumps 10 USD worth of VET into your Coinbase account.
What's yours is yours, so feel free to trade around with it or sit on it or withdraw it! The world is your oyster, and you are 12 USD worth of VET richer! I am swapping mine into LTC, and sending it over to the HIVE chain.
Enjoy!
It is free damn money.