Echoing Green funds social entrepreneurs and their organizations (such as Freelancers Union). They've just announced that they're agressively expanding their program, and are now adding 20 new fellows a year.
Since one of our eligible membership sectors is nonprofits, we thought some of your pursuits might fit the bill. (Echoing Green has a quiz to help you figure out whether you should apply.) Good luck! P.S. Yes, their name is derived from the poem by William Blake.