I once bought a router to use for my internet when I moved into my new house just to find out that it “wasn’t compatible” with Verizon’s service. I still have it (because I’m terrible about returning things). Is there any point in keeping it? Is there anything fun or interesting that I could do with it?
Potentially you could serve them a captive portal. I thought about this a while back, basically to create a sneakernet WiFi network where people could connect directly to a landing page that had my music for download, for example.