Ask HN: Websites and contents for Kids?

I am tired of showing my kids (3-5 years) youtube videos of animals, blippi, Kids TV and so on. Despite being addictive and informative, I somehow (strongly) feel video consumption may dumb the kids down.

I guess, many of us have worked on, and/or explored some of the web contents for own kids during the Covid-19 stay home time.

What are some of the interactive, informative, inspiring, educational, funny web sites, games, contents that you have come across and tried for your kids?

Please share. :)