My anti-distraction setup uses multiple dnsmasqs, one of them has a long list of blocked (ad-)domains, and DNS tags, something like this (1).

So the devices with the "black" tag have a different DNS server (it's the same computer, but it has 2 IPs), and has DNS-level ad-blocking (convenient for phones) and can't access reddit, Twitter, etc. One device doesn't have blocks, in case the aggressive blocking breaks something. I guess it'd be great to use a slow laptop to browse brainrot sites to discourage me from doing so.

(1) https://stackoverflow.com/questions/22467430/dnsmasq-tags-an...