Income-based approach would be Proof of Stake (PoS) which allows you use the coins to stake in validating transactions. The reward is for the fee for solving the algorithm. There are many coins out there that does it but it seems to hinge a lot on how much you own... Been trying hard to get to a critical mass to stake and get rewarded quicker... Couple of coins to consider are: NEO, NEBL, NAV, DASH, and PIVX.. They vary on the payout but on average is 1-10%. I know ADA, ETH, VEN will go to PoS or PoS-like environment.. Benefit for coin is people would hold them more than sell them and holders get payouts...