Givr is an app designed to facilitate food donations from the public, to food banks. Designed by a group of third year students, the concept came from extensive research and was iterated on based on testing. The team blogged the design process, you can read it here.
Those that run a food bank can submit a request for a certain supply in under a minute. Users of the app are shown requests close to them, making the process painless. See the app here.