Since someone has already posted something similar and I've contacted him about our mutual interests, I'll share it.

Hosting of miners. I'm looking to start a business where I accept mining hardware, and only take a fraction of what they pay in electricity. Electricity will make a decent amount of mining hardware go unprofitable in the next few months, so I'll look to make a mutual profit off of that hardware by eliminating a majority of the risk from the kW/h payments miners must make to electricity. I take some of of the profits, but they still get a majority of theirs and actually get more, as their costs will go down. =)

EDIT: I forgot one important part. I don't pay for electricity. =)