From time to time, Coinbase does these "lessons" where you learn about different types of crytocurrency. After watching a short video (~2mins) and answering a quiz question or two, they credit your account with $10 in free crypto. My personal 'Coinbase Earn' area has gift referrals that I can share with my friends, but it turns out my friends think crypto is dumb

So I'm posting the links here in case anybody wants them, otherwise they'll probably go to waste. Concept is pretty straight forward, you complete the lessons and we each make $10. The links are only good for the first four uses, after that I assume they expire. To access, go to the Coinbase website and manually enter the below after the domain name in the URL
For EOS: /earn/eos/invite/9d4w3bcq
For Stellar Lumens (XLM): /earn/xlm/invite/8jvtkpr7
Note: If you don't have a Coinbase account for the above links or you want to buy/sell crypto, you do not need a referral to setup. However, if you want one, mine is /join/kuchar_d (enter after domain in URL). Similar concept, invest $100 in crypto and we both get $10 in Bitcoin. Cheers!