Earned 18 USD in 1 day just holding kCS. Seems better than Mining.
2017-11-25 Received
≈ 0.00204893 BTC
≈ 18.12 USD
Here is mine from 26.11
2017-11-26 Received
≈ 0.00001101 BTC
≈ 0.10 USD
And i've got 2001 KCS.
So you my good sir, must either have a shitload of KCS or some good referrals.

Speaking of referrals, feel free to use mine, if you plan on signing up. The exchange is pretty decent, and are good at quickly listing some exciting new coins. Currently the volume on the exchange is pretty low. Especially with eth-pairings. btc-pairings have better volume.
https://www.kucoin.com/#/?r=E4AaJm