Homeseer sells some wall dimmers that have a series of small LED Lights on the side that can be used to show the status of something. For example, if the front door is unlocked, all 7 of the LEDS will flash red. If the water heater circulation pump is running, the lights flash blue just to let you know that it is on. (Homeseer automatically turns off the pump after it runs for 4 minutes). The ceiling outlets in the garage that the door opener plugs into are z wave controlled by HomeSeer. Power is automatically turned off on schedule at 11 PM and it is not turned back on until 7 AM (people leave car doors in driveway unlocked, dirtbag gets into car, finds remote garage door opener, opens garage door....)
Aetoec sold a z-wave doorbell but what is cool about it is the 'chime' module that plugs into an outlet, is actually a mp3 player. You can use an online text to speech program, export it as a .mp3 file, and then copy it to the module. So, for example, I have a motorized ball valve to turn on/off the airline from my compressor (I would rather shut off the air than the electricity). So when I want to use the compressor, it should already be up to pressure, I just say "Alexa, compressor on" and then the chime module that I have in the garage announces "The air compressor just turned on" to confirm that it worked. Same thing when turning it off
Lots of stuff to play with
https://homeseer.com/lighting/
https://darwinsden.com/audio-clips-for-smart-home-automation-systems/