It's so sad. I feel like we need to be hoarding all sorts of random media that was put out pre-AI, because it's flooding everything. Videos, music, gaming, historical photos/videos...
Random example: I have a folder of desktop wallpapers that I've been casually adding to for the last decade or so. Literally thousands of them by this point, but I haven't added anything recently because every source is inundated with AI generations now.
There are a lot of long nature videos on youtube meant for this purpose - some with relaxing music, some without. I'll occasionally play one on a TV when I know I'm going to be bouncing around the house all day, and it's nice.
I don't know of any actual livestreams like that, but some zoos have livestreams of their aquariums or exhibits that are cool too.
I love my Logitech G502, which I'm sure you will see recommended anywhere you look because it's pretty popular.
I'm still using the wired version, but if I were to be in the market for a new one today, the wireless one would be the first I checked out.