Something that is missing from the suggestions above, something that is fundamental to public health and many other public service professions is ASSESSMENT.
In that extensive list of ideas for improving on the food bank, community assessment doesn't factor in at all. As someone who has supervised volunteers in a community health setting, nothing will annoy me faster than proposed solutions without knowledge our clientele, organization, or community partnerships first. As a community health nurse, I would never dream of starting a new intervention without putting in some leg work to know the background of the problem I'm seeking to address.
As an example, I volunteered in a nutrition center in another country for a few months. On my resume, I politely explained that during my stay, I mostly observed and truly listened to parents, employees, and community members. I make no claims to contributions at all and instead tout my dedication to community based processes. Not only did I get into a top nursing program (with attached public health school), I was offered a hefty scholarship based mostly on an essay about my experiences of observing and working toward being welcomed into the community.
Just sayin' there is more than one option here. You're not in public health school yet so its not expected that you will be an intervention prodigy. A demonstrated commitment to the assessment process says more about the future-practitioner, in my opinion.