An idea's value comes from its execution. I couldn't possibly execute on all my startup ideas, which is why I'm sharing them here. I'd love to watch the good ones come to fruition.
College campuses are known for not having enough parking. Nearby restaurants could open up their parking lots at slow times to gain additional income from an unused asset (their parking lot). They could easily adjust the hours that parking is available via an easy-to-use app or web solution.