There is a unique mining operation going on Crypto-Potential, it's only for projects as of now. There is no computing power involved, but it rather works on achievement principle.
As far as I understand there are tons of projects that already mine the tokens and I heard that in the future you will be able to buy a "node" from a project you like and earn some of their mining potential.
Here is some more info:
https://crypto-potential.com/token