A way to reuse some rain water, allow those who don't have yards to garden, build community by supplying a place where people get together and garden, improve healthy food options. I'm thinking a network of smaller gardens and not a full on farm. In Seattle each neighborhood has their own "P-Patch". They are public spaces and much of the produce is donated to homeless shelters. Given our growing season, we could make a pretty big dent!

Example in Seattle:
http://www.seattle.gov/neighborhoods/ppatch/

Grant options:
http://communitygarden.org/learn/resources/funding-opportunities.php