What's the point of having another router?

https://lemmy.austinwadeheller.com/post/125

What's the point of having another router? - Swagtastic Lemmy

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?

is it a wireless router? You could turn it into an access point and extend your wifi
Trolling people sounds interesting. Is there any way to have them auto-navigate to a rickroll upon connecting?
Captive portal?
I'll look into that, thanks.