I’m going to be posting some ideas generated at a hackathon that I recently participated in at my college. It was a 24 hour ruby on rails extravaganza, preceded by an ideation session. Most of these ideas are not my own. With that being said, the first idea:
An online list that multiple people can update with groceries/supplies that they need, and the ability for one member to mark off the items that he or she bought for the group.