Zcash is cryptocurrency with a focus on privacy, similar to Monero, except that, like Bitcoin, Zcash has a fixed total supply of 21 million. This means that the sender, reciever and the amount of the transaction are hidden on the Blockchain. As of August 2017, Zcash is valued at $224 with a $453 million market share. Zcash is immune to ASIC miners, and can only be mined using CPUs or GPUs, which makes mining more accessible and cheaper. So if you have a computer lying around with decent specs, give mining Zcash a go. Here is the step by step guide:
https://www.cryptocompare.com/mining/guides/how-to-mine-zcash/