Maybe you would like to look into
http://storj.io and
http://driveshare.org/The payouts are not extreme by any means, but still, you can make some BTC by renting our disk space.
I have not tried storj.io, I just heard about them on some podcasts.
I looked in to this and it seems they are in development and have been for awhile. I will keep my eye on them..