Setting up a mesh network is far easier and cheaper than you would think. It’s time you picked up a few devices and flashing the firmware. See thread for more links.
Discussion
nostr:npub12vxmc97aqsr72dzpss6wngxwg56jxzqzsj08r3a8dn8e8t3ygrvs95s6cq that could be useful in our neck of the swamp