We changed DNS for all devices to use OpenDNS familyshield [0] for starters. It's a passive way to throttle some of the worst of the worst out there.
Of course setting some limits on how much / how often helps a bit, and frank discussions about what too much of an addictive thing does to you.
Our youngest is developmentally delayed and will absolutely ignore any guidelines and follow the path of least resistance / most enticement, so their bedroom connection runs through a proxy running Squid [1] where I've whitelisted school and certain entertainment (that took a bit of time running Telerik Fiddler[2] to gather the many domains necessary for the whitelist)
Spotify was a bit of a problem, again with our youngest who went straight for the podcasts with the most adult content, which Spotify gleefully recommended the first moment we turned the service on. Could never find a way to turn podcasts off - never wanted them.
We run our own Emby[3] server that everyone has access to with curated music tv and movies (and also have the usual streaming video services, but those are reserved for common areas).
Looked at other options like walled garden family services (e.g. Amazon Kindle Fires with subscription), but there seems to only be content ranging up to ~12 year old tastes.
What a great post to start off a weekend - thanks. For anyone excited about this, you may want to check out the amazing collections at Rijksmuseum [0] as well.
Suggestion: A hotkey (in or out of the virtual computer) that allows you to reset to the default orientation without having to reload the page. On a laptop with only a touchpad, I'm fighting with the controls a bit.
16% lift in overall test scores: https://www.ischool.berkeley.edu/sites/default/files/sprojec...
11% lift in math test scores: https://bearworks.missouristate.edu/cgi/viewcontent.cgi?arti...
And Khan Academy's impact page: https://www.khanacademy.org/about/impact has links to additional studies.