Your use is yours of course, I’m old and retired and like to fiddle with technology. So this might or might not suit.
I bought a refurbished Amazon HD10 and it also has the dashboard in a button on the bottom left in landscape when registered.
I wasn’t thrilled with the dashboards limited abilities, so I fire toolboxed it, and loaded Tinycam and the Wyze app from the play store and planning on using it as a sort of kiosk of sorts. Someday.
I just loaded a live view of an OG and it’s sitting here just fine in the Wyze app on my lesser model fire Tablet.
My mistake was not waiting, I bought the 9th Gen 2019 model for $58 I think. 1 gig of RAM I think, but 64gb of storage.
They have the 2021 11th gen refurbished right now “I think” for about $80 or $85. 4 gig of RAM. Early Black Friday.
It might be another option so the kids can just glance over if you set it to stay awake or just wake it, user choice. Mine is staying awake without any settings, must be the Wyze app.
With fire toolbox the higher the version of android in the fire tablets, the less it can kick out, the ads, etc. Requires a little research and effort. Following the directions mattered too. https://www.xda-developers.com/amazon-fire-toolbox-helps-install-google-apps-change-launchers-and-more-on-amazon-fire-tablets/
I may even log in and buy one of the more ram models.
There are some generic androids on Amazon as well, 6gb etc. For about $79, but I have no idea how well they work or last.
My personal opinion is the Fire Sticks aren’t good for streaming cameras, especially with their limited Alexa dashboard. But Tinycam seems to work so far on the stick. When viewing four cameras, but I’m pushing it there.