I tried pi-hole, but it turned in a real pain, trying to set it up for normal use, plus two WFH offices. I may give it another try, when I feel more patient.

The idea of mocking websites came from talking to other parents from my kids' school. I was thinking about some form of a local "internet" for our neighbourhood for all the kids. Heavily curated, a mix of mock sites (like the full download of Wikipedia), news through RSS, moderated message boards, etc. I don't think it's an original idea given the current state of the Internet, so at this stage I'm just reading up on design best practices.