Coinbase currently have quizzes you can watch and answer questions on to receive free crypto, these get added to your Coinbase Wallet where you can trade, hold or sell them.

You will need a Coinbase account that has been verified before you can do this

I have the links to each quiz plus the answers to make things smooth and easy

XLM - up to $60
https://coinbase.com/earn/xlm/invite/fv02wxj5

XLM quiz answers

1: A decentralized protocol that unites the world financial infrastructure.

2: Facilitating low cost, universal payments.

3: Transactions are fast, inexpensive, and global.

4: To issue, exchange, and transfer tokens quickly and efficiently

5: It relies on the cooperation of trusted nodes to confirm transactions

Comp - up to $50

https://coinbase.com/earn/comp/invite/8kbp7wxs

1.  earning interest on your crypto

2.  supply a crypto asset as collateral

3.  comp token holders

Band - up to $50

https://coinbase.com/earn/band/invite/m2t8j53r

1.  Real world data

2. Oracles

3. Earn crypto rewards

Maker - $6

1. MKR and DAO

2.  MKR holders

3. A crypto walland and crypto collateral

Celo $6

1.  Making crypto available on mobile phones

2.  Staking, governance, and stability

3.  Using the Valora mobile app

GRT $3

1.  Blockchain Data

2.  GRT tokens

3.  Curators

Ill update when more quizzes come out

Please use my referral. 

Cheers