I have one running pi-hole and Ubiqiti controller (powered by my router's usb port), one sitting under the TV running Kodi connected to a NAS, avoiding the need for discs (big plus when you have small children), one sat next to an old hi-fi which also links to the NAS and lets me stream music to the hi-fi, and a couple of older ones which aren't connected to anything having been replaced with newer models. Oh, and a Zero, which I've never found a use for.