67. Talk to someone for 10 minutes. In Charlotte in 2015 and 2016, the Take 10 project recruited city workers to function as "ambassadors" who engaged in simple, direct conversations with residents, asking them what they like about their city and how to make it better. Crowdsourcing at its finest, the initiative also gave people a direct, personal connection with the municipal employees that make their hometown work.
This will work with anything where you have some control -- a neighborhood, a business, another organization, etc. Find out what people really want and need, then provide that as best you can.