Staking Rewards.com has come out with a list of popular coins that you can stake for a little bit of passive income.
Pundi X is at the top of the list on their website because they offer one of the highest staking yields per year at about 25% with some of the highest liquidity for these rewards. So if you stake about 2 million coins in your ERC-20 wallet and don't move them for the entire month, then you will recieve about 42,000 tokens at the end of the month.
Staking coins on this website range from as low as 0.01% per year for staking NXT coin to as high as 59.68% per year for OkCash. However, investing in a coin based purely on staking rewards can be risky. If you invest in coins that offer great staking rewards, but the staking rewards are too high, then this could lead to massive sell-offs, and inflation, and ultimately crash the price.
I like this website because it doesn't simply sort these coins based on percentage gains per month, but it also takes into account the risks of buying into these different staking coins by having a category on the website called "risk". Risk in the opinion of the website is a combination of a number of factors including marketcap, liquidity, price stability, inflation, community, public interest, and developer activity.
Neo is also a well known coin with yearly staking rewards in the form of their gas token which offers a yearly staking reward of about 4.6% currently. Even though the staking reward is about 4.6% per year, their token is listed on a lot of exchanges and has very high liquidity which means that it will be relatively easily to sell Neo or your staking rewards when you decide to sell Neo. Neo also has a stable risk rating when you compare it to Pundi X which has a moderate risk rating according to the website.
Take a look around the website in order to decide if any of these coins pique your interest. I think we all want to believe that there is this idea of passive income from staking any of the tokens or coins that we own, but there is more to it than this. If the staking rewards are too high as in the old project Embercoin which was giving out staking rewards of nearly 10% or more daily if I remember correctly, people were generating millions of coins within a matter of weeks which ended up devaluing the coin completely. Also, if you look at this website you'll notice that Ethereum is now listed on their website with a minimum staking balance of 32 ETH in order to receive about $20 worth of ETH per month at the current value. ETH is listed with a staking reward of about 6% per year which will probably not lead to massive incentives to sell ETH in bulk unless you're holding thousands of ETH.
Basically, the point of this article is that staking rewards are a great way to earn some passive income especially if you believe in the long-term vision of the coin/token. However, don't fool yourself into thinking that staking rewards create completely risk-free passive income as their are a number of factors to consider and the biggest factor here is probably liquidity. If the coin does not have enough liquidity (not very easy to sell on the exchanges, low trade volume) then having 1 million of a coin is going to be pointless. Anyways, nothing I say here is intended to be financial advice, and you should always do your own research. This website is also missing a lot of popular coins that you can stake, but it is helpful for giving you an idea of the risk you may be taking when investing in a coin with staking rewards.