I configured the newsboat rss reader for my youtube subscriptions, but you may want to configure another reader that allows you to download/watch videos. An alternative to @cow@lemmy.world's javascript code, you can go onto the homepage of a youtube channel, open up the page source and search for "rssurl". That will give you the rss feed for the channel.

A lot of readers can do this automatically. It really is nice to watch videos without any of the suggestions or ads. Also, if you use mpv to watch the videos, you can install a sponsorblock script that does away with the paid promotions in the video.

Yes, this bookmarklet javascript:(function () { var newLocation = function () { var url; Array.prototype.slice.call(document.getElementsByTagName('link')).forEach(function (element) { if (element.getAttribute('type') === 'application/rss+xml') { console.log('Found direct feed link'); url = element.getAttribute('href'); } }); if (!url) { Array.prototype.slice.call(document.getElementsByTagName('meta')).forEach(function (element) { if (element.getAttribute('itemprop') === 'channelId') { console.log('Found channel ID'); url = 'https://www.youtube.com/feeds/videos.xml?channel_id=' + element.getAttribute('content'); } }); } return url; }(); if (newLocation === undefined) { console.log('Could not find a channel RSS feed from ' + location.href); } else { location.href = newLocation; } })(); Will convert a youtube channel page to a rss feed. I watch the videos using photon and mpv but that is probably too advanced for your kid but a simpler app might work.