I found a bit of this with the Meshtastic/Meshcore community in my city. I haven't participated lately, but I still keep a node running at home to try to support the network in a very limited way. Fun to pop on every so often and say hello, see who has new gear, and gauge the activity levels around me.
I also keep one in my car in case of ... something.
I also keep one in my car in case of ... something.