I'm afraid having no experience of Google assistant or devices I don't know anything about the correspondence between that and the amazon Alexa, so a separate list there might be a good thing.
Eventually I do plan db pages for some, if not all of these, but manifestly there is a lot out there to add and there is only one of me .
Btw, I have found two very amusing uses for the Amazon echo now. Firstly, the ability to dungeon crawl and play other games while I do the washing up is pretty cool, and secondly, mrs. Dark is quite a fan of word of the day and Jeopardy.
Jeopardy I am less keen on, since I've noticed many of the questions are rather Us centric, eg, out of todays round there was one question about American Advert jingles and one other one about the capital of Texus, still it's a fun thing to do together, and the speech recognition is pretty good.
The audio rewards in word of the day are indeed getting rather more amusing .
With our dreaming and singing, Ceaseless and sorrowless we! The glory about us clinging Of the glorious futures we see,
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)