Useful information. I did not know that NEO and ARK had a passive income stream. I will check them out. Since you are like me and like passive income. You may want to take a look at smartcash. I like it for that and more. Smartcash has what we call a smartreward. This works like an interest on your savings account. To earn smartrewards all you need is 1000 smarts. This has to be held on an address by the 25th of the month (snapshot is taken for next payment) and still be untouched by the next snapshot to qualify for a share of the smart rewards. The smartrewards comes from the block rewards. I particularly love this as it is NOT staking. The address with the smarts can even be a paper wallet.
One of my previous articles speaks about it:
https://steemit.com/smartcash/@nitego/58vdau-introduce-your-teens-to-smartcash