Interesting.
It seems Amazon is trying to put Alexa into everything, like a shotgun.
The glasses, ear buds and ring are are approaching what Apple already knows. You don't need an Echo in every room if the human is carrying it on their person (ex. the iPhone). I bet these play on the same trick the Auto does, that your smartphone/Alexa App does all the work over bluetooth.
The countertop super-oven isn't for me, and it certainly doesn't need a Dot in it. The Show is a better device for the kitchen, so it's best to NOT embed echo in other kitchen appliances.
The original Alexa Microwave got that part right. The clock was ugly and has a myopic shortcoming. It only relays timers from its paired Echo. Showing all timers set in the house from anywhere would solve the actual problem I have, in that I do something and set a timer in the laundry room or kitchen and return to the living room.
The flex looks like a decent idea for any room with a countertop height outlet, assuming you can spare the outlet. Not a bedroom with outlets near the floor. And my bathrooms have a single outlet and high competition for appliances. So the kitchen. Where the Show reigns supreme.
I'm not sold on these devices. The flex with night lite might have a place in my home. The personal alexas are pricey, and for tech that goes out of style (aka new models), i'd prefer a more disposable price point. The ring seems the least obtrusive to me, but with only 4 sizes fits all...