I use Alexa for a lot of home automation. I've got a tuya hub and plugs, Phillips hue hub and lights, Alexa enabled air con. A Logitech harmony hub for ir control. If it gets too hot at home then fans and Aircon comes on so the dogs don't overheat.
Using a combination of Alexa, IFTTT and tasker, everything switches off when it detects that we all out I use an app called Alberto Sonorous to control Netflix and YouTube on the TV.
I've also written some scripts to link a Rpi to a till roll printer, so it spits out Todo lists, shopping lists, appointments and calender stuff for each of us.
I've got a few cams set up to, so if the dogs go bonkers I can see what's causing it, that's not necessarily an Alexa thing but I can go Alexa dog cams on/off , so I don't get pics when we're at home.
Some if the most useful things are timers, Alexa timer for 4 minutes, while I'm cooking. And reminders
It broadcasts to other Alexa's so I can shout at the DC's in their bedroom from the comfort of the living room without having to get up. or make a call from my phone hands free.
It's good for; Alexa whose Rosa Parks, Alexa love island update, Alexa when did Stalin die Alexa has Donald trump been arrested yet or as the DC's love to do Alexa despacito
Finally don't I play music as I let my prime music subs lapse.
What I could do with is Alexa enabled microwave, slow cooker, coffee machine, rice cooker and a properly enabled TV as I've had to cludge it all together