This is where it might be good to come up with some sort of social enterprise, so ultimately the projects you do pay for themselves in some way. Nearly all charities are run as a business to some extent, but by focussing on the business aspect you may be able to find a way to support more activities in the long run.
Personally I've got a very good business plan that tackles many issues, including education, training, the economy, manufacturing, leadership/management skills, STEM skills, social inclusion, urban regeneration, and a whole load more. It will probably take me quite a long time to even write up the business plan, since there's so much involved. It's also really easy to see ways you can add on other bits and pieces as you work on a project, so it's easy to let things grow to the point where they get out of hand.
