GOOD, as you may know, has been helping Pepsi give away grant money to people with interesting and helpful ideas. The two guys behind the Bikeloc project used a $5,000 Pepsi Refresh grant to take a bike tour across the nation, collecting stories about the local food movement.
[youtube]http://www.youtube.com/watch?v=xUVSnKFUkcg
If you want to get $5,000 to bike across the nation documenting stories about local food, you probably can't, because that idea's been done, but you can still propose just about anything else.