Thanks to PoS (Proof-of-Stake), it is possible to earn not only from a trade but also just from the possession of cryptocurrency.

The most interesting cryptocurrencies for passive income:

NEO and its related coin GAS. It is necessary to consider that not all purses are identical therefore it is important to check in advance whether the chosen purse allows earning rewards in GAS. Annual profitability makes 4−6%.

Dash. Profit is rather high — about 7,5−8,4%. Minus is that creation of a master node requires not less than 1000 coins - about $162 thousand.

PIVX. Creation of a master node requires 10 thousand PIVX for the total amount about 12 thousand dollars. Profitability about 5,5% a year.