I use to run a local entertainment forum, and have been wanting to do something fun with the domain (City: Halifax, Domain: halifamous.com) for awhile.
Some ideas:
Would love to hear about any local sites/apps that are adding value to your city that could also potentially generate a small bit of monthly revenue.
I started a local job board for Dallas specific tech jobs. I really haven't put much effort into it (zero effort in past 12 months), even at launch. I know it could be good and useful, because Dallas is a good city for tech job and companies.
Take a look now, cause I just woke up the Dyno 😝
http://www.dallasjobs.io/
In Houston we have a yearly hackathon for civic tech.
Two of the projects I've worked on:
https://houstonbook.link (aggregated library search portal)
https://allergeez.me (pollen tracking and notification app)
I haven't really thought about monetizing these, I mostly think of them as a common good kind of thing.